Dangerous Heat in the Central U.S. and Northeast; Heavy Rainfall Across the Gulf Coast

A significant heat wave is underway for the Intermountain West, Northern Plains, and Upper Great Lakes, peaking in intensity through Tuesday. This heat is expected to be exceptionally rare and produce numerous high temperature records. Showers and thunderstorms with the potential to produce heavy rainfall and flash flooding is expected across the Gulf Coast. Read More >

Click a location below for detailed forecast.

Last Map Update: Mon, Jul 13, 2026 at 5:40:20 pm PDT

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

Zoom Out

National Weather Service Los Angeles, CA

Extreme Heat Warning

Heat Advisory

Coastal Flood Advisory

Small Craft Advisory

Beach Hazards Statement

Fire Weather Watch

Heat Wave this Week

Moderate Heat Risk this Week

Chance of Thunderstorms this Week

A Heat Advisory is in effect from Tuesday through Thursday and Hot and Humid conditions exist across the San Joaquin Valley. Will expect the Heat Risk to start at Moderate Levels and rise to Major levels during the Mid-week event. High temperatures during this time will range from 102 to 108 degrees and overnight low stay in the mid to upper 70s. Stay indoors in Air Conditioning when possible, and drink water to stay hydrated.

Showers and thunderstorms arrived into central California with a 30-40 percent chance of thunderstorms along the Sierra Nevada crest today. The chances decrease during the remainder of the week but will continue to exist across the Sierra Nevada and portions of the Kern County desert. We also cannot rule out sprinkles or light showers in the San Joaquin Valley this Evening. A slight chance of thunderstorms returns to the Mojave Desert this Weekend.

Text Product Selector (Selected product opens in current window)

Dangerous Heat in the Central U.S. and Northeast; Heavy Rainfall Across the Gulf Coast

NWS Forecast Office Hanford, CA