weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Excessive Heat Warning


URGENT - WEATHER MESSAGE
National Weather Service Medford OR
143 AM PDT Thu Jul 4 2024

CAZ080-081-ORZ024-026-050000-
/O.CON.KMFR.EH.W.0001.240704T1500Z-240709T0400Z/
Western Siskiyou County-Central Siskiyou County-Eastern Curry
County and Josephine County-Jackson County-
Including the cities of Ashland, Hilt, Weed, Jacksonville, Yreka,
Fort Jones, Happy Camp, Wilderville, Etna, Medford, Greenview,
Klamath River, Rogue River, Butte Falls, Grants Pass, Scott Bar,
Applegate, Somes Bar, Callahan, Shady Cove, Cave Junction, Gold
Hill, and Merlin
143 AM PDT Thu Jul 4 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING
TO 9 PM PDT MONDAY...

* WHAT...Dangerously hot conditions with high temperatures of 110 to
  115 and low temperatures in the upper 60s expected over multiple
  days.

* WHERE...In California, western and central Siskiyou County. This
  includes the cities of Yreka, Weed, Etna, and Happy Camp.  In
  Oregon, Josephine and Jackson counties and eastern Curry County.
  This includes the entire Rogue Valley and the cities of Medford,
  Grants Pass, Cave Junction, and Butte Falls.

* WHEN...From 8 AM this morning to 9 PM PDT Monday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events, particularly for those working or
  participating in outdoor activities. Area rivers will be cold and
  can cause shock to swimmers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
116 AM PDT Thu Jul 4 2024

CAZ520-522-523-NVZ017-020-041800-
/O.EXT.KVEF.EH.W.0003.000000T0000Z-240711T0600Z/
Owens Valley-Death Valley National Park-Western Mojave Desert-
Western Clark and Southern Nye County-Las Vegas Valley-
Including the cities of Lone Pine, Indian Springs, Henderson,
Boulder City, Stovepipe Wells, Furnace Creek, Fort Irwin,
Pahrump, Amargosa Valley, North Las Vegas, Olancha, Las Vegas,
Independence, Shoshone, Daggett, Desert Rock, Bishop, and Barstow
116 AM PDT Thu Jul 4 2024

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 11 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions for an unusually long period.
  High temperatures 105 to 111 in the Owens Valley, 110 to 118 in
  Las Vegas, Pahrump, and Barstow, and 122 to 129 at Furnace Creek
  in Death Valley National Park.

* WHERE...In California, Death Valley National Park, Owens Valley,
  and Western Mojave Desert. In Nevada, Las Vegas Valley and Western
  Clark and Southern Nye County.

* WHEN...Until 11 PM PDT Wednesday.

* IMPACTS...Heat-related illnesses increase significantly during
  extreme heat events.

* ADDITIONAL DETAILS...Hot temperatures overnight will mean little
  relief from the daytime heat, especially in Las Vegas and Death
  Valley, where low temperatures may not fall below 90 degrees for
  several days.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
116 AM PDT Thu Jul 4 2024

AZZ002-003-036-CAZ524>527-NVZ014-016-021-022-041800-
/O.EXT.KVEF.EH.W.0003.240704T1800Z-240711T0600Z/
Lake Havasu and Fort Mohave-Northwest Deserts-Lake Mead National
Recreation Area-Eastern Mojave Desert-Morongo Basin-Cadiz Basin-
San Bernardino County-Upper Colorado River Valley-Esmeralda and
Central Nye County-Northeast Clark County-Lake Mead National
Recreation Area-Southern Clark County-
Including the cities of Desert Hills, Beatty, Yucca, Silver Peak,
Hoover Dam, Valentine, Yucca Valley, Kingman, Mitchell Caverns,
Topock, Twentynine Palms, Lake Havasu City, Cal-Nev-Ari, Moapa,
Golden Valley, Dolan Springs, Overton, Primm, Needles,
Searchlight, Goldfield, Wikieup, Mountain Pass, Morongo Valley,
Mohave Valley, Oatman, Mesquite, Vidal Junction, Baker, Bullhead
City, Dyer, and Laughlin
116 AM PDT Thu Jul 4 2024 /116 AM MST Thu Jul 4 2024/

...EXCESSIVE HEAT WARNING NOW IN EFFECT FROM 11 AM PDT /11 AM MST/
THIS MORNING TO 11 PM PDT /11 PM MST/ WEDNESDAY...

* WHAT...Dangerously hot conditions for an unusually long period.
  High temperatures 107 to 111 in Beatty and Kingman, 110 to 117 in
  Primm and the Morongo Basin, and 113 to 121 in Baker, Mesquite,
  and the Colorado River Valley.

* WHERE...Portions of northwest Arizona, southeast California, and
  south central and southern Nevada.

* WHEN...From 11 AM PDT /11 AM MST/ this morning to 11 PM PDT /11 PM
  MST/ Wednesday.

* IMPACTS...Heat-related illnesses increase significantly during
  extreme heat events.

* ADDITIONAL DETAILS...Hot temperatures overnight will mean little
  relief from the daytime heat, especially in lower elevations of
  the Colorado River Valley, where low temperatures may not fall
  below 90 degrees for several days.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupat11ional Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
116 AM PDT Thu Jul 4 2024

AZZ001-NVZ015-041800-
/O.EXB.KVEF.EH.W.0003.240706T1800Z-240711T0600Z/
Northwest Plateau-Lincoln County-
Including the cities of Pioche, Tuweep, Mt Trumbull, Caliente,
Hiko, Panaca, Rachel, Alamo, Colorado City, Western Grand Canyon,
and Pipe Spring National Monument
116 AM PDT Thu Jul 4 2024 /116 AM MST Thu Jul 4 2024/

...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM PDT /11 AM MST/
SATURDAY TO 11 PM PDT /11 PM MST/ WEDNESDAY...

* WHAT...Dangerously hot conditions. High temperatures 103 to 109 in
  Colorado City and at Pipe Spring, and 105 to 112 in Caliente,
  Hiko, and Alamo.

* WHERE...In Arizona, Northwest Plateau. In Nevada, Lincoln County.

* WHEN...From 11 AM PDT /11 AM MST/ Saturday to 11 PM PDT /11 PM
  MST/ Wednesday.

* IMPACTS...Heat-related illnesses increase significantly during
  extreme heat events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air-conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1259 AM PDT Thu Jul 4 2024

CAZ013-015>019-063-066-067-042300-
/O.CON.KSTO.EH.W.0003.000000T0000Z-240710T0600Z/
Shasta Lake Area / Northern Shasta County-Northern Sacramento
Valley-Central Sacramento Valley-Southern Sacramento Valley-
Carquinez Strait and Delta-Northern San Joaquin Valley-Mountains
Southwestern Shasta County to Western Colusa County-Northeast
Foothills/Sacramento Valley-Motherlode-
Including the cities of Fairfield/Suisun, Modesto, Jackson,
Oroville, Shasta Dam, Marysville/Yuba City, Sacramento, Red
Bluff, Alder Springs, Stockton, Grass Valley, Redding, Chico, and
Paradise
1259 AM PDT Thu Jul 4 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 11 PM PDT
TUESDAY...

* WHAT...Dangerously hot conditions with high temperatures from 105
  to 118. Limited overnight relief with low temperatures in the
  upper 60s to mid 80s. Widespread Major to Extreme HeatRisk is
  expected.

* WHERE...Carquinez Strait and Delta, Sacramento Valley, Northern
  San Joaquin Valley, Motherlode, Mountains Southwestern Shasta
  County to Western Colusa County, Northeast Foothills, and Shasta
  Lake Area / Northern Shasta County.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events, particularly for those working or
  participating in outdoor activities.

* ADDITIONAL DETAILS...Heat could significantly impact outdoor
  holiday activities. Area waterways will continue to run cold and
  fast, creating dangerous conditions for those seeking relief in
  rivers and lakes. Delta breeze influence will result in slightly
  cooler, but still hot temperatures in the Vicinity Delta and
  western portions of the Sacramento Area by late weekend into early
  next week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

Stay cool, stay hydrated, stay informed.

Monitor the latest forecasts and warnings for updates.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
827 PM PDT Wed Jul 3 2024

CAZ300>322-324-332-334-336-338-041200-
/O.CON.KHNX.EH.W.0002.000000T0000Z-240711T1500Z/
West Side Mountains north of 198-Los Banos - Dos Palos-Merced -
Madera - Mendota-Planada - Le Grand - Snelling-Coalinga - Avenal-
West Side of Fresno and Kings Counties-Caruthers - San Joaquin -
Selma-Fresno-Clovis-West Side Mountains South of 198-Buttonwillow
- Lost Hills - I5-Delano-Wasco-Shafter-Hanford - Corcoran -
Lemoore-Visalia - Porterville - Reedley-Buena Vista-Bakersfield-
Southeast San Joaquin Valley-South End San Joaquin Valley-
Mariposa Madera Foothills-Mariposa-Madera Lower Sierra-Fresno-
Tulare Foothills-Fresno-Tulare Lower Sierra-South End Sierra
Foothills-South End of the Lower Sierra-Yosemite Valley-Kern
River Valley-Tehachapi-Frazier Mountain Communities-Mojave Desert
Slopes-
Including the cities of Delano, Alpaugh, Parlier, Lost Hills,
North Fork, Millerton Lake, Fish Camp, McKittrick, Lemoore
Station, Merced, Lake Isabella, Hanford, Lamont, Corcoran,
Richgrove, Arvin, Auberry, Kerman, Visalia, Fresno, Mariposa,
Taft, Yosemite Valley, Camp Nelson, Madera, Sanger, Coarsegold,
Planada, Mojave, Shafter, Bass Lake, Five Points, Atwater, Lake
Mcclure, Kernville, Buttonwillow, Kettleman City, San Luis
Reservoir, Los Banos, Tehachapi, Frazier Park, Bakersfield,
Lemoore, Le Grand, El Portal, Avenal, Tulare, Blackwells Corner,
Wasco, Goshen, Porterville, Oakhurst, Kingsburg, Coalinga, and
Selma
827 PM PDT Wed Jul 3 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 AM PDT THURSDAY,
JULY 11...

* WHAT...Dangerously hot conditions with a 50 to 90% Probability of
  high temperatures 107F or hotter. There is a 50% Probability of
  minimum temperatures of 73F or warmer. Extreme heat risk will
  occur through the duration of this heat wave.

* WHERE...A portion of central California.

* WHEN...Until 8 AM PDT Thursday, July 11.

* IMPACTS...This level of rare, long-duration extreme heat with
  little to no overnight relief affects everyone, especially those
  without effective cooling and/or adequate hydration.

* ADDITIONAL DETAILS...Impacts likely in most health systems,
  heat-sensitive industries and infrastructure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Stay cool, stay hydrated, stay informed.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
756 PM PDT Wed Jul 3 2024

CAZ105-107-108-041500-
/O.CON.KEKA.EH.W.0001.000000T0000Z-240707T0300Z/
Northern Humboldt Interior-Northern Trinity-Southern Trinity-
Including Weaverville, Junction City, Hoopa, Carrville, Helena,
Big Bar, Peanut, Hayfork, Willow Creek, Trinity Center,
Weitchpec, Hyampom, Douglas City, Del Loma, Ruth, Orleans, and
Forest Glen
756 PM PDT Wed Jul 3 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
SATURDAY...

* WHAT...Dangerously hot conditions with heat index values up to 105.

* WHERE...Trinity County.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
756 PM PDT Wed Jul 3 2024

CAZ110-111-041500-
/O.CON.KEKA.EH.W.0001.000000T0000Z-240707T0300Z/
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Including Potter Valley, Legget, Covelo, Willits, and Laytonville
756 PM PDT Wed Jul 3 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
SATURDAY...

* WHAT...Major to localized extreme HeatRisk with highs up to 105
  and limited overnight relief with lows near 65.

* WHERE...Northern Mendocino Interior.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat. This level of heat will affect anyone without
  effective cooling or adequate hydration.

* ADDITIONAL DETAILS...Heat could significantly impact outdoor
  holiday activities. Hot weather will begin on Tuesday with near
  record breaking temperatures through the week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
756 PM PDT Wed Jul 3 2024

CAZ113>115-041500-
/O.CON.KEKA.EH.W.0001.000000T0000Z-240707T0300Z/
Southeastern Mendocino Interior-Northern Lake-Southern Lake-
Including Lakeport, Hidden Valley Lake, Talmage, Ukiah, Hopland,
Gravelly Valley Airport, Finley, Clearlake Park, Redwood Valley,
Clearlake, Calpella, and Middletown
756 PM PDT Wed Jul 3 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
SATURDAY...

* WHAT...Major to localized extreme HeatRisk with highs up to 110
  and limited overnight relief with lows near 70.

* WHERE...Lake County, and Southeastern Mendocino Interior.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat. This level of heat will affect anyone without
  effective cooling or adequate hydration.

* ADDITIONAL DETAILS...Heat could significantly impact outdoor
  holiday activities. Hot weather will continue near record breaking
  temperatures through the week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1226 PM PDT Wed Jul 3 2024

CAZ502>504-506-510-512>518-041300-
/O.EXT.KMTR.EH.W.0001.000000T0000Z-240711T0600Z/
Marin Coastal Range-Sonoma Coastal Range-
North Bay Interior Mountains-North Bay Interior Valleys-
East Bay Interior Valleys-Santa Cruz Mountains-
Santa Clara Valley...including San Jose-Eastern Santa Clara Hills-
East Bay Hills-
Southern Salinas Valley...Arroyo Seco...and Lake San Antonio-
Santa Lucia Mountains and Los Padres National Forest-
Mountains of San Benito and Interior Monterey County including
Pinnacles National Park-
1226 PM PDT Wed Jul 3 2024

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 11 PM PDT
WEDNESDAY...

* WHAT...Dangerously hot conditions with temperatures in the
  upper 90`s to 115F expected. Limited overnight relief with low
  temperatures in the mid 60s to low 80s. Resultant widespread
  Major HeatRisk, with areas of Extreme HeatRisk.

* WHERE...Marin Coastal Range, Sonoma Coastal Range, North Bay
  Interior Mountains, North Bay Interior Valleys, East Bay
  Interior Valleys, Santa Cruz Mountains, Santa Clara Valley,
  Eastern Santa Clara Hills, East Bay Hills, Southern Salinas
  Valley, Santa Lucia Mountains and Los Padres National Forest,
  and Mountains of San Benito and Interior Monterey.

* WHEN...Until 11 PM PDT Wednesday.

* IMPACTS...Most individuals will be at risk for heat-related
  illnesses without effective cooling or adequate hydration,
  especially with prolonged outdoor exposure. Without effective
  cooling and/or adequate hydration, heat-related illnesses
  including heat stroke will be a risk to everyone. Overnight
  lows will warm as well leading to poor relief from the heat
  specifically in elevated terrain and interior areas.

* ADDITIONAL DETAILS...An exceptionally dangerous situation is
  expected to unfold during this potentially historic and deadly
  heat event. Several days of temperatures well above normal
  will lead to compounding effects among people and
  infrastructure, with the possibility of numerous heat related
  fatalities. It cannot be stressed enough that while one day at
  these temperatures may be manageable for some, an event of
  this scale, magnitude, and longevity will likely rival
  anything we`ve seen in the last 18 years. Heat is the number
  one weather related killer in the United States. By this
  weekend, it is VERY LIKELY that we add to that statistic if
  preparations are not taken seriously.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay cool, stay out of the sun, and check
up on relatives and neighbors.

Beat the heat and check the backseat! Do not leave young children
and pets in unattended vehicles. Car interiors will reach lethal
temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to the early
morning or evening. Take action when you see symptoms of heat
exhaustion and/or heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency! Call 9 1 1.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Reno NV
814 AM PDT Wed Jul 3 2024

NVZ001-003>005-042100-
/O.CON.KREV.EH.W.0001.240706T1700Z-240710T1700Z/
Western Nevada Basin and Range including Pyramid Lake-Mineral and
Southern Lyon Counties-Northern Washoe County-Greater Reno-Carson
City-Minden Area-
Including the cities of Mina, Smith Valley, Gardnerville, Schurz,
Lovelock, Fallon, Nixon, Verdi, Gerlach, Virginia City,
Yerington, Hawthorne, Empire, Imlay, Sparks, Silver Springs, and
Fernley
814 AM PDT Wed Jul 3 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SATURDAY TO
10 AM PDT WEDNESDAY...

* WHAT...Temperatures are going to warm significantly as we head
  into the 4th of July weekend with afternoon highs approaching 100
  degrees across western NV on the 4th of July, then heating further
  to near or above 105 degrees over the weekend and early next week.
  This will result in a prolonged period of Major HeatRisk.

* WHERE...Northern Washoe County, Western Nevada Basin and Range
  including Pyramid Lake, Greater Reno-Carson City-Minden Area, and
  Mineral and Southern Lyon Counties.

* WHEN...From 10 AM Saturday to 10 AM PDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events, particularly for those working or
  participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

To reduce risk during outdoor work, schedule frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$


Red Flag Warning


URGENT - FIRE WEATHER MESSAGE
National Weather Service San Francisco CA
817 PM PDT Wed Jul 3 2024

...CRITICAL FIRE WEATHER CONDITIONS INTO FRIDAY AND THE UPCOMING
WEEKEND...

.Red Flag Warnings currently in effect for high elevations of the
North Bay, East Bay Hills, and the Santa Cruz Mtns and have been
extended through 9 PM Saturday. The Marin and Sonoma Coastal
Ranges will see their Red Flag Warning end at 5 AM Friday. Also,
Red Flag Warnings go into effect at 5 AM Friday through 9 PM
Saturday for the higher terrain of Monterey and San Benito
counties as well as the southern Salinas Valley. While the winds
are marginal, this decision was made due to a combination of
continued very low RH in the teens, very dry fuels, and the 4th of
July holiday. Also, gusts up to 25 mph will be possible across
ridgetops and higher peaks. Fuels continue to cure and will see no
relief through this weekend. In fact, 10 and 100 hour fuels are
near historic levels in the North Bay in regard to the energy
release component going into the weekend. The same fuels in the
Diablo Range and Santa Cruz Mtns aren`t far behind.

CAZ502-503-041300-
/O.CON.KMTR.FW.W.0002.000000T0000Z-240705T1200Z/
Marin Coastal Range-Sonoma Coastal Range-
817 PM PDT Wed Jul 3 2024

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT FRIDAY FOR
CRITICALLY DRY FUELS AND LOW HUMIDITY FOR THE MARIN AND SONOMA
COASTAL RANGES...

* AFFECTED AREA...Fire Weather Zone 502 Marin Coastal Range and
  Fire Weather Zone 503 Sonoma Coastal Range.

* TIMING...Until 5 AM Friday.

* WINDS...Southwest 5 to 10 mph with gusts up to 15 to 20 mph.

* RELATIVE HUMIDITY...As low as 15 percent.

* TEMPERATURES...Up to 103.

* IMPACTS...Critical fire weather conditions. Increased chance
  for fire starts in dry, open grasses. Outdoor burning and
  especially fireworks are not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service San Francisco CA
817 PM PDT Wed Jul 3 2024

...CRITICAL FIRE WEATHER CONDITIONS INTO FRIDAY AND THE UPCOMING
WEEKEND...

.Red Flag Warnings currently in effect for high elevations of the
North Bay, East Bay Hills, and the Santa Cruz Mtns and have been
extended through 9 PM Saturday. The Marin and Sonoma Coastal
Ranges will see their Red Flag Warning end at 5 AM Friday. Also,
Red Flag Warnings go into effect at 5 AM Friday through 9 PM
Saturday for the higher terrain of Monterey and San Benito
counties as well as the southern Salinas Valley. While the winds
are marginal, this decision was made due to a combination of
continued very low RH in the teens, very dry fuels, and the 4th of
July holiday. Also, gusts up to 25 mph will be possible across
ridgetops and higher peaks. Fuels continue to cure and will see no
relief through this weekend. In fact, 10 and 100 hour fuels are
near historic levels in the North Bay in regard to the energy
release component going into the weekend. The same fuels in the
Diablo Range and Santa Cruz Mtns aren`t far behind.

CAZ504-512-515-041300-
/O.CON.KMTR.FW.W.0002.000000T0000Z-240707T0400Z/
North Bay Interior Mountains-Santa Cruz Mountains-East Bay Hills-
817 PM PDT Wed Jul 3 2024

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT SATURDAY FOR
CRITICALLY DRY FUELS AND LOW HUMIDITY FOR NORTH BAY INTERIOR
MOUNTAINS, EAST BAY HILLS, AND SANTA CRUZ MOUNTAINS...

* AFFECTED AREA...Fire Weather Zone 504 North Bay Interior
  Mountains, Fire Weather Zone 512 Santa Cruz Mountains and Fire
  Weather Zone 515 East Bay Hills.

* TIMING...Until 9 PM Saturday.

* WINDS...West 5 to 10 mph with gusts up to 25 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* TEMPERATURES...Up to 107.

* IMPACTS...Critical fire weather conditions. Increased chance
  for fire starts in dry, open grasses. Outdoor burning and
  especially fireworks are not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$


Heat Advisory


URGENT - WEATHER MESSAGE
National Weather Service Medford OR
143 AM PDT Thu Jul 4 2024

CAZ084-085-ORZ029>031-050000-
/O.CON.KMFR.HT.Y.0001.240704T1500Z-240709T0400Z/
Northeast Siskiyou and Northwest Modoc Counties-Modoc County-
Klamath Basin-Northern and Eastern Klamath County and Western
Lake County-Central and Eastern Lake County-
Including the cities of Tulelake, Valley Falls, Klamath Falls,
Beatty, Bly, Olene, Likely, New Pine Creek, Macdoel, Davis Creek,
Midland, Paisley, Alturas, Newell, Sprague River, Fort Rock,
Gilchrist, Day, Altamont, Chemult, Adel, Adin, Dorris, Crescent,
Canby, Lakeview, and Lookout
143 AM PDT Thu Jul 4 2024

...HEAT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING TO 9 PM
PDT MONDAY...

* WHAT...High temperatures of 95 to 100 degrees with lows in the
  upper 50`s expected over multiple days.

* WHERE...In California, Modoc County and northeast Siskiyou County.
  This includes the cities of Macdoel and Alturas. In Oregon, Lake
  County and eastern Klamath County. This includes the cities of
  Klamath Falls, Chemult, Summer Lake, and Lakeview

* WHEN...From 8 AM this morning to 9 PM PDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses. Area rivers
  will be cold and can cause shock to swimmers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

&&

$$

AH

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
116 AM PDT Thu Jul 4 2024

CAZ521-NVZ018-019-041800-
/O.NEW.KVEF.HT.Y.0002.240706T1800Z-240711T0600Z/
White Mountains of Inyo County-Sheep Range-Spring Mountains-Red
Rock Canyon-
Including the cities of Bristlecone Pine, Hayford Pk, Westgard
Pass, Mt Charleston, and Red Rock Canyon
116 AM PDT Thu Jul 4 2024

...HEAT ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 11 PM PDT
WEDNESDAY...

* WHAT...High temperatures 90 to 100 on either side of Westgard Pass
  on Highway 168, 85 to 90 at 8000 feet in the Spring Mountains and
  Sheep Range, and 105 to 110 at 4000 feet in Red Rock Canyon.

* WHERE...White and Inyo Mountains, Sheep Range, and Spring
  Mountains-Red Rock Canyon.

* WHEN...From 11 AM Saturday to 11 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/lasvegas

CM

URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1259 AM PDT Thu Jul 4 2024

CAZ014-068-069-042300-
/O.CON.KSTO.HT.Y.0003.000000T0000Z-240710T0600Z/
Burney Basin / Eastern Shasta County-Western Plumas County/Lassen
Park-West Slope Northern Sierra Nevada-
Including the cities of Burney, Blue Canyon, Chester, and Quincy
1259 AM PDT Thu Jul 4 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...Hot conditions with high temperatures up to 95-110. Limited
  overnight relief with low temperatures in the upper 50s to upper
  70s. Areas of Major and Extreme HeatRisk are expected.

* WHERE...Burney Basin / Eastern Shasta County, West Slope Northern
  Sierra Nevada, and Western Plumas County/Lassen Park.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events, particularly for those working or
  participating in outdoor activities.

* ADDITIONAL DETAILS...Heat could significantly impact outdoor
  holiday activities. Area waterways will continue to run cold and
  fast, creating dangerous conditions for those seeking relief in
  rivers and lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

Monitor the latest forecasts and warnings for updates.

&&

$$

For more information, visit us at www.weather.gov/sto/

IDS

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
756 PM PDT Wed Jul 3 2024

CAZ112-041500-
/O.EXT.KEKA.HT.Y.0003.000000T0000Z-240705T0300Z/
Southwestern Mendocino Interior-
Including Yorkville, Boonville, and Philo
756 PM PDT Wed Jul 3 2024

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Moderate to localized Major HeatRisk with highs up to 105
  and limited overnight relief with lows near 65.

* WHERE...Southwestern Mendocino Interior.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat. This level of heat will affect anyone without
  effective cooling or adequate hydration.

* ADDITIONAL DETAILS...Heat could significantly impact outdoor
  holiday activities. Hot weather will continue near record breaking
  temperatures through the week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1226 PM PDT Wed Jul 3 2024

CAZ006-041300-
/O.CON.KMTR.HT.Y.0004.000000T0000Z-240705T0200Z/
San Francisco-
1226 PM PDT Wed Jul 3 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY...

* WHAT...Temperatures in the mid to upper 80s expected.
  Temperatures near 90 for southeast portions of the city.

* WHERE...San Francisco.

* WHEN...Until 7 PM PDT Thursday.

* IMPACTS...Those sensitive to heat, such as the homeless,
  elderly, children, and pets will be at risk for heat-related
  illnesses. Those without effective cooling and/or adequate
  hydration will be at the greatest risk.

* ADDITIONAL DETAILS...The temperature will vary greatly across
  the city with the highest temperatures in the SE and downtown
  and more mild temperatures in the West Side and along.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay cool, stay out of the sun, and check
up on relatives and neighbors.

Beat the heat and check the backseat! Do not leave young children
and pets in unattended vehicles. Car interiors will reach lethal
temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to the early
morning or evening. Take action when you see symptoms of heat
exhaustion and/or heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/mtr

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1226 PM PDT Wed Jul 3 2024

CAZ508-528-529-041300-
/O.EXT.KMTR.HT.Y.0004.000000T0000Z-240711T0600Z/
San Francisco Bay Shoreline-
Northern Salinas Valley...Hollister Valley...and Carmel Valley-
Northern Monterey Bay-
1226 PM PDT Wed Jul 3 2024

...HEAT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT WEDNESDAY...

* WHAT...Temperatures in the lower 80s to mid 90s.

* WHERE...San Francisco Bay Shoreline, Northern Monterey Bay,
  and Northern Salinas Valley, Hollister Valley, and Carmel
  Valley.

* WHEN...Until 11 PM PDT Wednesday.

* IMPACTS...Those sensitive to heat, such as the homeless,
  elderly, children, and pets will be at risk for heat-related
  illnesses. Those without effective cooling and/or adequate
  hydration will be at the greatest risk.

* ADDITIONAL DETAILS...An exceptionally dangerous situation is
  expected to unfold over the next week as we enter a
  potentially historic and deadly heat event for inland areas.
  Several days of temperatures well above normal will lead to
  compounding effects among people and infrastructure, with the
  possibility of numerous heat related fatalities. It cannot be
  stressed enough that while one day at these temperatures may
  be manageable for some, an event of this scale, magnitude, and
  longevity will likely rival anything we`ve seen in the last 18
  years. Heat is the number one weather related killer in the
  United States. By this weekend, it is VERY LIKELY that we add
  to that statistic if preparations are not taken seriously.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay cool, stay out of the sun, and check
up on relatives and neighbors.

Beat the heat and check the backseat! Do not leave young children
and pets in unattended vehicles. Car interiors will reach lethal
temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to the early
morning or evening. Take action when you see symptoms of heat
exhaustion and/or heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency! Call 9 1 1.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Reno NV
814 AM PDT Wed Jul 3 2024

CAZ070-042100-
/O.EXA.KREV.HT.Y.0003.240706T1700Z-240710T1700Z/
Surprise Valley California-
Including the cities of Eagleville, Fort Bidwell, and Cedarville
814 AM PDT Wed Jul 3 2024

...HEAT ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 10 AM PDT
WEDNESDAY...

* WHAT...Temperatures are going to warm significantly as we head
  into the 4th of July weekend with afternoon highs 100 to 105
  degrees. While overnights will cool briefly, these daytime
  temperatures will be at record levels and very unusual even for
  summer. This will result in a prolonged period of Moderate
  HeatRisk.

* WHERE...Surprise Valley California.

* WHEN...From 10 AM Saturday to 10 AM PDT Wednesday.

* IMPACTS...This extended period of hot weather may cause heat
  illnesses, especially for those with no access to air conditioning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Reno NV
814 AM PDT Wed Jul 3 2024

CAZ071>073-NVZ002-042100-
/O.CON.KREV.HT.Y.0003.240706T1700Z-240710T1700Z/
Greater Lake Tahoe Area-Lassen-Eastern Plumas-Eastern Sierra
Counties-Mono County-
Including the cities of Coleville, Lee Vining, Susanville,
Loyalton, Incline Village, Mammoth Lakes, South Lake Tahoe,
Glenbrook, Bridgeport, Sierraville, Markleeville, Stateline,
Truckee, Westwood, Portola, and Tahoe City
814 AM PDT Wed Jul 3 2024

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 AM PDT
WEDNESDAY...

* WHAT...Temperatures are going to warm significantly as we head
  into the 4th of July weekend with afternoon highs 90 to 95 degrees
  in most valley areas, locally to 105+ degrees across the hotter
  Chalfant Valley in Mono County and the Honey Lake area including
  Susanville in northeast CA. While overnights will cool briefly,
  these daytime temperatures will be at record levels and very
  unusual even for summer. This will result in a prolonged period of
  Moderate HeatRisk.

* WHERE...Greater Lake Tahoe Area, Lassen-Eastern Plumas-Eastern
  Sierra Counties, and Mono County.

* WHEN...From 10 AM Saturday to 10 AM PDT Wednesday.

* IMPACTS...This extended period of hot weather may cause heat
  illnesses, especially for those with no access to air conditioning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

WH


Coastal Flood Advisory


Coastal Hazard Message
National Weather Service San Francisco CA
247 AM PDT Thu Jul 4 2024

CAZ006-506-508-042200-
/O.CON.KMTR.CF.Y.0010.000000T0000Z-240705T1200Z/
San Francisco-North Bay Interior Valleys-
San Francisco Bay Shoreline-
247 AM PDT Thu Jul 4 2024

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT
FRIDAY...

* WHAT...Minor coastal flooding.

* WHERE...Bayshore coasts along the San Francisco and San Pablo
  Bays.

* WHEN...Until 5 AM PDT Friday.

* IMPACTS...Flooding of lots, parks, and roads with only
  isolated road closures expected.

* ADDITIONAL DETAILS...Tidal levels are increasing as a result of
  higher astronomical tides. Low lying areas within the SF Bay
  Area may see minor flooding as a result during high tide. Next
  high tide in San Francisco is 6.71 feet at 10:45 PM July 4th.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

&&

$$


Excessive Heat Watch


URGENT - WEATHER MESSAGE
National Weather Service Elko NV
243 AM PDT Thu Jul 4 2024

NVZ030-036-037-040-041-050045-
/O.CON.KLKN.EH.A.0001.240706T1700Z-240710T1700Z/
Humboldt County-Northern Lander County and Northern Eureka County-
Southern Lander County and Southern Eureka County-
Northwestern Nye County-Northeastern Nye County-
Including the cities of Golconda, Winnemucca, Valmy, Dufferena,
Argenta, Battle Mountain, Crescent Valley, Beowawe, Dunphy,
Emigrant Pass, Palisade, Eureka, Pinto Summit, Grass Valley,
Hickison Summit, Diamond Valley, Eureka Airport, Garden Pass,
Manhattan, Round Mountain, Tonopah, Blue Eagle Ranch,
and Duckwater
243 AM PDT Thu Jul 4 2024

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH WEDNESDAY MORNING...

* WHAT...Dangerously hot conditions with high temperatures in
  the middle 90s to lower 100s in valleys possible.

* WHERE...Humboldt County, Northern Lander County and Northern
  Eureka County, Southern Lander County and Southern Eureka
  County, Northwestern Nye County and Northeastern Nye County.

* WHEN...From Saturday morning through Wednesday morning.

* IMPACTS...Extreme heat will significantly increase the
  potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Be prepared to drink plenty of fluids, stay in an air-
conditioned room, stay out of the sun, and check up on relatives
and neighbors.

Young children and pets should never be left unattended in
vehicles under any circumstances. This is especially true during
warm or hot weather when car interiors can reach lethal
temperatures in a matter of minutes.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/lkn

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
846 PM MDT Wed Jul 3 2024

IDZ014>016-030-033-042300-
/O.CON.KBOI.EH.A.0001.240708T1800Z-240711T0000Z/
Upper Treasure Valley-Southwest Highlands-Western Magic Valley-
Southern Twin Falls County-Upper Weiser River-
846 PM MDT Wed Jul 3 2024

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON...

* WHAT...Dangerously hot conditions with maximum temperatures up
  to 100-105 on Monday gradually warming up to 103-108 by
  Wednesday.

* WHERE...Portions of south central, southwest and west central
  Idaho.

* WHEN...From Monday afternoon through Wednesday afternoon.

* IMPACTS...Extreme heat will significantly increase the
  potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Multiple daily max temperature records are
  being threatened by this heatwave. The longevity of the event
  makes this a particularly dangerous heat wave.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Be prepared to drink plenty of fluids, stay in an air-
conditioned room, stay out of the sun, and check up on relatives
and neighbors.

Young children and pets should never be left unattended in
vehicles under any circumstances. This is especially true during
warm or hot weather when car interiors can reach lethal
temperatures in a matter of minutes.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
846 PM MDT Wed Jul 3 2024

IDZ012-029-ORZ061>064-042300-
/O.CON.KBOI.EH.A.0001.240706T1800Z-240711T0000Z/
Lower Treasure Valley ID-Owyhee Mountains-Harney County-
Baker County-Malheur County-Oregon Lower Treasure Valley-
846 PM MDT Wed Jul 3 2024 /746 PM PDT Wed Jul 3 2024/

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON...

* WHAT...Dangerously hot conditions with maximum temperatures up
  to 100-104 on Saturday gradually warming up to 105-110 by
  Wednesday.

* WHERE...Portions of southwest Idaho and northeast and
  southeast Oregon.

* WHEN...From Saturday afternoon through Wednesday afternoon.

* IMPACTS...Extreme heat will significantly increase the
  potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Multiple daily max temperature records are
  being threatened by this heatwave. The longevity of the event
  makes this a particularly dangerous heat wave.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Be prepared to drink plenty of fluids, stay in an air-
conditioned room, stay out of the sun, and check up on relatives
and neighbors.

Young children and pets should never be left unattended in
vehicles under any circumstances. This is especially true during
warm or hot weather when car interiors can reach lethal
temperatures in a matter of minutes.

&&

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: [email protected]
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE
OSZAR »