Severe Weather and Heavy Rain for the Plains and Mid-Atlantic; Building Heat in the West

Severe thunderstorms will remain possible in the Mid-Atlantic through Tuesday. Severe thunderstorms and heavy rain will also be possible in the central/southern Plains on Tuesday and Wednesday. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Hot and dry weather will create Elevated to Critical fire weather conditions in the Four Corners Region. Read More >

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Last Map Update: Mon, Jun 22, 2026 at 11:16:23 pm PDT

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

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National Weather Service Los Angeles, CA

Beach Hazards Statement

Moderate Heat Risk expected by Mid-Week

Warm-Up Mid-Week

Practice Heat Safety

Practice Water Safety

Temperatures across Central California expected to reach the Century Mark this week as 100 degree readings will be seen across the San Joaquin Valley. These temperatures will place the Heat Risk at Moderate Levels. At this level, heat-related illnesses to those sensitive to heat, such as older adults (65+), infants, athletes, outdoor workers, those without effective cooling, and those with chronic diseases will be elevated. Some risk to general population.

A warm-up will be on the way over the next few days as a ridge of high pressure builds over the Desert Southwest. There are moderate probabilities for highs in the San Joaquin Valley to exceed 100 degrees Tuesday through Thursday.

Heat can be very taxing on the body and can lead to heat related illnesses or make existing health conditions worse. Everyone can be vulnerable to heat, but some more so than others. 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. Drink plenty of WATER.

If planning on heading out onto the water for some recreational boating or swimming this summer, you should both know the weather forecast before you leave, as well as check on the weather while you’re out. Boating on cold water is inherently very dangerous for the unprepared. You should know some information & facts about safe boating and swimming before you go out. Even in the summer, prolonged immersion in water temperatures below 70 degrees Fahrenheit can produce hypothermia. Always carry a life jacket.