Extreme Heat Warning for Mariposa-Madera Lower Sierra
This alert is no longer in effect.
NOAA issued it on August 9, 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 Mariposa-Madera Lower Sierra, with highs up to 110 degrees and major heat risk.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Mariposa-Madera Lower Sierra, California
- Issued
- August 9, 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 Mariposa-Madera Lower Sierra, California.
Alert Details
Extreme Heat Warning issued by NWS Hanford CA. Effective from August 9 at 10:02 AM PDT through August 10 at 8:00 PM PDT.
Affected Areas
Mariposa-Madera Lower Sierra, including Mariposa, North Fork, Oakhurst, Coarsegold, and El Portal.
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 up to 110 degrees and Major Heat Risk today and Monday. Afternoon highs of 102 to 110 degrees, with the hottest temperatures expected today at elevations around 3,000 feet and lower. Overnight lows generally in the mid 60s to mid 70s.
Timeline
Alert effective August 9 at 10:02 AM PDT, expires August 9 at 8:15 PM PDT, and ends August 10 at 8:00 PM PDT.
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 (797 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 9, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.