Right now
The most recent data we hold from HEAT GOV arrived 4 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert is in force until 8 September 2026, 05:15 UTC.
It is one of only 4 we have recorded within 20 km of this point since 11 August 2026. The last comparable one was on 11 August 2026.
What the source measured
HEAT GOV reported: * WHAT...High temperatures in the upper 80s to low 90s expected and overnight lows in the 70s below 5000 ft. * WHERE...Riverside County Mountains and San Diego County Mountains. * WHEN...From 10 AM Tuesday to 8 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITION...
An estimated 184,546 people live within 50 km of this point.
Nearby, since 11 August 2026
- August 11, 2026 · score 43 · 18.9 km
- August 11, 2026 · score 43 · 18.9 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 69 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 69% |
| Coordinates | 33.3756, -116.6013 |
| Nearest City | La Quinta (42 km) |
| Population Exposed | 184.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-08T17:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-08T10:00:00-07:00 |
| Expires | 2026-09-07T22:15:00-07:00 |
| AreaDesc | Riverside County Mountains; San Diego County Mountains |
| SenderName | NWS San Diego CA |
| ZonesUsedForCentroid | 2 |
| ZoneCount | 2 |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.