Severe Weather near Moreno Valley
Right now
The most recent data we hold from HEAT GOV arrived 24 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 the only one we have recorded within 20 km of this point since 8 September 2026.
What the source measured
HEAT GOV reported: * WHAT...High temperatures in the upper 90s to 103 degrees expected overnight low temperatures in the mid-70s. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...From 10 AM Tuesday to 8 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses. * AD...
An estimated 2,959,578 people live within 50 km of this point.
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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) | 46 / 100 |
| Our confidence | 69% |
| Coordinates | 33.8913, -117.1860 |
| Nearest City | Moreno Valley (7 km) |
| Population Exposed | 3.0M 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 | San Bernardino and Riverside County Valleys-The Inland Empire |
| SenderName | NWS San Diego CA |
| ZonesUsedForCentroid | 1 |
| ZoneCount | 1 |
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 near Moreno Valley?
Calamity.live data shows a weather event with CalamityScore 46/100, near Moreno Valley (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.