NWS Warns of Heat Illness Risk as Bay Area Heat Advisory Takes Effect Wednesday
The National Weather Service says hot conditions could cause heat illnesses, urging precautions for sensitive individuals.
2 reports on this incident · first at Sep 7, 2026, 1:31 p.m. ET
Earlier reports
Sep 7, 2026, 1:31 p.m. ETFirst report
Heat Advisory Issued for Bay Area and Central Coast
The National Weather Service in San Francisco has issued a Heat Advisory for the Bay Area and Central Coast, effective from 10 AM PDT Wednesday, September 9, 2026, to 10 PM PDT Thursday, September 10, 2026. The advisory covers 19 zones, including San Francisco, the Marin and Sonoma Coastal Ranges, the North Bay Interior Mountains, and the Coastal North Bay, among others.
Hot conditions with temperatures 10 to 20 degrees above normal are expected. According to the advisory, this level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts are possible in some health systems and in heat-sensitive industries, and hot conditions can cause heat illnesses.
The advisory recommends drinking water, taking extra precautions when outside, wearing lightweight and loose-fitting clothing, and limiting strenuous activities to the early morning or evening. It also urges people not to leave young children or pets in unattended vehicles, as car interiors can reach lethal temperatures in minutes.
The advisory is set to expire at 10 PM PDT Thursday, September 10, 2026.
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- Version 17 Sept 2026, 17:35current
First published.
- Version 17 Sept 2026, 17:31current
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