Extreme Heat Warning Issued for Southern California
This alert is no longer in effect.
NOAA issued it on September 8, 2026, 12 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Los Angeles/Oxnard has issued an Extreme Heat Warning from 8 AM Wednesday to 8 PM PDT Thursday for multiple counties including San Luis Obispo, Santa Barbara, and Ventura.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Southern California
- Issued
- September 8, 2026
- Issuing authority
- NWS Los Angeles/Oxnard CA
Heat notices are time-bound and location-specific. Confirm the current forecast and local public-health guidance before relying on this archived record.
Record status: historical. It was issued 12 days ago; use the issuing agency's live warning service for current conditions in Southern California.
Alert Details
An Extreme Heat Warning has been issued by the National Weather Service Los Angeles/Oxnard CA. The alert was sent at 10:49AM PDT on September 8, 2026, and is effective from 8 AM Wednesday to 8 PM PDT Thursday.
Affected Areas
The warning covers Cuyama Valley; Santa Clarita Valley; San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Southeastern Ventura County Valleys; Santa Susana Mountains. Specific locations mentioned include Calabasas and Agoura Hills, Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational Area, Los Angeles County Beaches, Los Angeles County Inland Coast including Downtown Los Angeles, Los Angeles County San Gabriel Valley, Malibu Coast, Palos Verdes Hills, Western San Fernando Valley, and Western Santa Monica Mountains Recreational Area.
What You Should Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. To reduce risk during outdoor work, schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 911.
Expected Conditions
Temperatures of 88 to 108 expected. Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas, except likely peaking Thursday for the Santa Barbara South Coast.
Timeline
The Extreme Heat Warning is in effect from 8 AM Wednesday, September 9, 2026, to 8 PM PDT Thursday, September 10, 2026.
Original source: NOAA Official Notice ↗
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
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