Severe Thunderstorms Across the Central Plains; Hot Conditions in the Southern Plains and Lower Mississippi Valley

Severe thunderstorms are expected mainly from Kansas into northern Missouri and into Iowa Tuesday. Damaging winds will be the most likely threat, with large hail possible. An Enhanced Risk (level 3 of 5) of severe thunderstorms is in effect. Hot conditions will continue across the Southern Plains Tuesday, spreading into the southeast and Mid-Atlantic by Independence Day. Read More >

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Last Map Update: Tue, Jul 2, 2024 at 1:48:33 am PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

Excessive Heat Warning

Gale Warning

Red Flag Warning

Heat Advisory

Coastal Flood Advisory

Small Craft Advisory

Hazardous Seas Warning

Excessive Heat Watch

Fire Weather Watch

Major HeatRisk Wednesday

KBHX Radar Down Until Tuesday

Very Hot Temperatures this Week

Hazardous Marine Weather Early This Week

Lake County Red Flag

A strong heat wave will hit the area this week with the highest impacts in Mendocino and Lake Counties at first. Very hot day time temperatures combined with little overnight relief will create Major HeatRisk. This puts all people at risk for heat related illness without adequate cooling and hydration. Major HeatRisk will spread northward through the week.

KHBX radar serving northwest California is down for scheduled maintenance until next Tuesday, July 2nd. In the meantime, check out Sacramento (KDAX), Beale AFB (KBBX), and Medford (KMAX) radars for partial coverage of northwest California.

Near record temperatures remain on track early this week with the late week looking increasingly hot. Interior valleys should expect highs in excess of 110 all week long. By late week, even coastal areas should expect highs around 80. Take extra care to stay hydrated this 4th of July!

Marine weather will build sharply to gale force winds and hazardous steep seas this evening through Wednesday (7/3) evening. Sustained winds up to 35kt and sig. sea heights of 16ft can be expected for this timeframe in the outer waters with lesser seas and winds in the inner waters.

Extremely dry conditions combined with gusty northeast wind early this week will create critical fire weather conditions, especially around the rim of the Sacramento Valley in Lake County. With 4th of July coming up, take extra care to help prevent wildfire!