This alert expired on 12 August 2026 at 01:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flash Flood Warning issued August 11 at 3:26PM PDT until August 11 at 6:30PM PDT by NWS Las Vegas NV
An estimated 577,380 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 34.1412, -116.7333 |
| Nearest City | Banning (27 km) |
| Population Exposed | 577.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T22:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.399206625afd008758345b546518b278 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | San Bernardino, CA; San Diego, CA |
| Headline | Flash Flood Warning issued August 11 at 3:26PM PDT until August 11 at 6:30PM PDT by NWS Las Vegas NV |
| Expires | 2026-08-11T18:30:00-07:00 |
| SenderName | NWS Las Vegas NV |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.399206625afd008758345b546518b27896dff0c9.001.1","noaa_urn:oid:2.49.0.1.840.0.9dbe47a1c35c2fb1c0c6de626f1c1d44485dea06.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
Series begins 10 February 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.
Calamity.live data shows a weather event with CalamityScore 48/100, near Banning (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.