Regional Outbreaks of Severe Weather Through Early Next Week; Early Season Heat Wave across the South

Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. Read More >

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Last Map Update: Fri, May 30, 2025 at 1:52:11 pm PDT

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

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National Weather Service Los Angeles, CA

Extreme Heat Warning

Red Flag Warning

Heat Advisory

Small Craft Advisory

Heat Advisory

Major Heat Risk This Friday and Saturday

Major Heat Risk Info

Moderate Fire Risk for Sierra Nevada

Stay Safe Around Area Lakes and Rivers

The first Heat Advisory for 2025 for the San Joaquin Valley has been issued and is in effect from 11 AM Friday May 30 through 7 AM Sunday June 1. #CAWx #Fresno #Bakersfield

High temperatures are expected to rise well above normal by Friday and Saturday and lead to Major Heat Risk for those days. This level of heat can cause heat-related illnesses for much of the population, especially those without effective cooling or hydration.

Major Heat Risk is expected for this Friday and Saturday with well above normal highs those days. This level of heat affects can cause heat-related illnesses for much of the population, especially those without effective cooling or hydration. Little to no relief at night; air conditioning is necessary as fans and open windows at night will not be enough.

Warming temperatures over the weekend will cause drier conditions to propagate across central California. Minimum Relative Humidity is expected between 10 and 20 percent both Friday and Saturday, and wind gusts could reach up to 20 mph. There is a 10 to 15 percent chance for thunderstorms over the Sierra Nevada Saturday and Sunday, which may bring about dry lightning in these areas with the drier air at the surface. Take precautions to mitigate fire development and spread.

With triple-digit heat anticipated for the weekend, keep in mind that area lakes and rivers are still running cold, and in some cases, may have a 30 degree difference between air and water temperature. Warm air temperatures do NOT mean warm water temperatures! Rivers in particular are running swift as dam water releases are increasing across the region. Continue to take precautions around waterways!