Extreme Heat and Fire Weather Conditions in the West; Severe Thunderstorm Threat in the Northern Plains on Thursday

Extreme heat will may set some new daily temperature records across the Desert Southwest. Hot, dry and windy conditions and dry thunderstorms continue to bring fire weather concerns for portions of the Desert Southwest, the central Great Basin and Rockies. Severe thunderstorms and heavy rain are expected across the Northern Plains late Thursday. Read More >

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Last Map Update: Thu, Aug 7, 2025 at 12:44:22 am PDT

Watches, Warnings & Advisories

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National Weather Service San Joaquin Valley, CA

National Weather Service Los Angeles, CA

Small Craft Advisory

Moderate HeatRisk - Interior Bay Area/North Bay

Warming Trend through the Weekend

What is Moderate HeatRisk?

A warming trend is anticipated starting today through the upcoming weekend. High temperatures are forecast to climb into the mid to upper 90s across interior portions of the Bay Area (East Bay and southern Santa Clara Valley). This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries.

A warming trend is anticipated through the weekend with many interior regions potentially seeing in excess of 90 degree high temperatures on Friday and Saturday. Far interior sections may see high temperatures as great as 101 degrees. This will translate to pockets of Moderate HeatRisk, across the interior North Bay, interior East Bay Hills, and Santa Clara Valley (including San Jose). Moderate HeatRisk means that most individuals (especially if you work outside) will be impacted by heat, especially if you don’t have adequate cooling and/or adequate hydration.

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Extreme Heat and Fire Weather Conditions in the West; Severe Thunderstorm Threat in the Northern Plains on Thursday

NWS Forecast Office San Francisco, CA