Heat Advisory Issued for San Francisco, Marin, Salinas, and Carmel Valleys
A Heat Advisory has been issued for San Francisco, Marin Coastal Range, Northern Salinas Valley/Hollister Valley, and Carmel Valley from today, October 3, at 11 AM PDT until Sunday, October 4, at 10 PM PDT, with residents urged to stay hydrated and take precautions against low-80s to low-90s temperatures.
A Heat Advisory has been issued for the San Francisco, Marin Coastal Range, and Northern Salinas Valley/Hollister Valley and Carmel Valley areas. Residents should take precautions to stay hydrated and avoid strenuous activity during peak heat hours. The advisory is effective from 11 AM PDT today, October 3, and will remain in effect until 10 PM PDT on Sunday, October 4.
The National Weather Service (NWS) San Francisco CA issued the advisory due to expected hot conditions, with maximum temperatures reaching the low-80s to low-90s. Mild overnight temperatures and weak onshore flow will limit nighttime cooling, offering little relief.
This level of heat can impact individuals without effective cooling or adequate hydration. Potential impacts on health systems, heat-sensitive industries, and infrastructure are likely.
To stay safe, drink plenty of water and, if possible, offer water to vulnerable individuals. When outdoors, wear lightweight and loose-fitting clothing, and limit strenuous activities to the early morning or evening. If you experience symptoms of heat exhaustion or heat stroke, seek immediate assistance.
Crucially, never leave young children or pets in unattended vehicles. Car interiors can reach lethal temperatures rapidly. This Heat Advisory was issued by NWS San Francisco CA.


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