Severe Weather Across the Center of the Nation; Fire Weather Concerns for Southwest and California; Snow for the Central Rockies

Severe thunderstorms will continue to impact the center of the Nation through today. Very large hail, strong tornadoes, and damaging winds are expected from the Great Lakes into the central/southern Plains; Flash flooding is possible for portions into the mid-Mississippi Valley. Critical fire weather conditions for the Southwest and central valley of California today. Winter hangs on for Rockies. Read More >

Click a location below for detailed forecast.

Last Map Update: Mon, May 18, 2026 at 6:46:32 am PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

National Weather Service San Joaquin Valley, CA

Gale Warning

Red Flag Warning

Coastal Flood Advisory

Small Craft Advisory

Lake Wind Advisory

Wind Advisory

Frost Advisory

Beach Hazards Statement

Red Flag Warning

Moderate HeatRisk

Gusty Winds Monday

Wind Advisory

Fire Weather Safety

A Red Flag Warning has been issued for the Sacramento Valley, Delta and the Northern San Joaquin Valley through Monday evening.

Temperatures warm mid to late this week, with Valley highs approaching 100 degrees by Thursday. Warm overnight lows will bring limited relief. Widespread Moderate HeatRisk is expected.

Gusty north to east winds are expected to continue Monday, peaking early in the day. Gusty winds may cause impacts to unsecured items and make driving difficult for high profile vehicles.

Wind Advisory remains in effect through 8 AM Monday for portions of the Delta and vicinity locations. Gusty winds may cause impacts to unsecured items and make driving difficult for high profile vehicles.

Fire Weather Safety: Avoid outdoor burning. Properly dispose of cigarettes and matches. Avoid power equipment that creates sparks. Make sure no vehicle parts drag on the ground, including towing chains. Do not park your vehicle over dry grass/vegetation.