Extreme Heat Warning for San Joaquin Valley and Kern River Valley
This alert is no longer in effect.
NOAA issued it on August 8, 2026, 2 weeks 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.
An Extreme Heat Warning is in effect until 8 PM PDT Monday for the San Joaquin Valley, adjacent foothills, Lake Isabella, and Kern River Valley, with highs of 105-110 degrees.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Central California
- Issued
- August 8, 2026
- Issuing authority
- NWS Hanford 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 2 weeks ago; use the issuing agency's live warning service for current conditions in Central California.
Alert Details
Extreme Heat Warning issued by NWS Hanford CA. Effective from August 8, 2026 at 9:24 AM PDT, with the warning in effect until 8 PM PDT Monday, August 10.
Affected Areas
San Joaquin Valley and adjacent foothills, Lake Isabella, and the Kern River Valley. Specific zones include Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley; Tehachapi; Grapevine; Frazier Mountain Communities.
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.
Expected Conditions
High temperatures of 105 to 110 degrees daily through the weekend into Monday, with the hottest temperatures expected on Sunday. Overnight lows will generally only fall into the mid 60s to mid 70s with little overnight relief. Multiple days of Major Heat Risk.
Timeline
The alert is effective starting August 8 at 9:24 AM PDT and remains in effect until 8 PM PDT on August 10.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
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
Nearest notices by article body length (1,420 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 8, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.