First published Oct 6, 2026, 7:58:15 PM UTC · Last updated Oct 6, 2026, 7:58:15 PM UTC

Extreme Heat Warning — NWS San Diego CA

Original source title

Extreme Heat Warning issued October 6 at 12:33PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

Reported by U.S. National Weather Service Alerts NWS

A severe heat warning covers the Santa Ana Mountains and Foothills through 8 PM PDT October 8, with high temperatures in the 90s and warm nights. The source advises staying cool, drinking fluids, avoiding sun exposure, and checking on others.

At a glance

Affected location: Santa Ana Mountains and Foothills

Illustrative image: Hot Creek is in eastern California's Long Valley Caldera, a large depression formed about 760,000 years ago during a large eruption of the Long Valley Volcano. The eruption produced large volumes of ash, air-fall pumice, and pyroclastic flow pumice. As the name suggests, Hot Creek's valley has hot springs - hydrothermal water emerges at the surface along an intracaldera extension of the Hilton Creek Fault. The bedrock in the Hot Creek area includes the Hot Creek Rhyolite Flow, a sanidine-augite- — James St. John/Wikimedia Commons, CC BY 2.0

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Why it matters

The source warns that heat-related illnesses increase during extreme heat and that car interiors can reach lethal temperatures within minutes.

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 6/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 3/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 6/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

U.S. National Weather Service Alerts NWS Extreme Heat Warning issued October 6 at 12:33PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

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