Tropical Storm and Storm Surge Warnings for the North Carolina Outer Banks; Heat Building in the West

Storm surge flooding and tropical storm conditions are expected in the Outer Banks beginning late Wednesday. Tropical Storm and Storm Surge Warnings are in effect. Tropical storm conditions are possible along the eastern shore of Virginia Thursday. Hurricane Erin will continue to produce life-threatening surf and rip currents along much of the east coast of the U.S. this week. Read More >

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Last Map Update: Tue, Aug 19, 2025 at 8:42:13 pm PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

Heat Advisory

Small Craft Advisory

Heat Advisory

Warming Trend Ahead

A Heat Advisory has been issued for Trinity, Lake, Interior Mendocino, and interior Humboldt Counties later this week into the weekend. Afternoon high temperatures are forecast to exceed 100 degrees in many areas, and near or exceed 110 in the hottest valleys.

Cold mornings and cool days will last through Monday. A warming and drying trend will begin on Tuesday through the end of the coming work week. Moderate to locally Major HeatRisk is expected from Thursday through the weekend across the warmest interior valleys with highs ranging from 95 to 110F. These levels would present risk of heat-related illness to anyone without affective cooling and/or hydration. Stay tuned for future updates for these possibly hazardous conditions.