Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

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Last Map Update: Thu, Jun 18, 2026 at 1:44:20 am PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

National Weather Service San Joaquin Valley, CA

Red Flag Warning

Heat Advisory

Coastal Flood Advisory

Small Craft Advisory

Beach Hazards Statement

Fire Weather Watch

Heat Advisory Through Friday AM

Critical Fire Weather

Heat Safety When Working

Lightning Awareness

Heat Advisory in effect for W NV Basin and Range Tuesday through early Friday AM. Afternoon highs reach the triple digits with poor overnight heat relief. For heat safety tips, visit https://www.weather.gov/safety/heat

Increasing thunderstorm chances with fast storm motions will pose a threat of new lightning ignition towards the end of the week. A Red Flag Warning has been issued for NE CA and far NW NV for Thursday. A Fire Weather Watch has been issued for parts of NE CA and far NW Nevada for Friday.

With temperatures peaking into the triple digits across valleys by Wednesday of this week, make sure to take precautions against the sun and the heat, especially for those working outdoors.