This alert expired on 10 August 2026 at 02:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 9 at 6:33PM MST until August 9 at 7:00PM MST by NWS Phoenix AZ
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 59 % 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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 33.1350, -113.7980 |
| Nearest City | Fortuna Foothills (78 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-10T01:33:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4e04c36fd560934c9d001ecda6c957c9 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Yuma, AZ; La Paz, AZ; Yuma, AZ |
| Headline | Severe Thunderstorm Warning issued August 9 at 6:33PM MST until August 9 at 7:00PM MST by NWS Phoenix AZ |
| Expires | 2026-08-09T19:00:00-07:00 |
| SenderName | NWS Phoenix AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4e04c36fd560934c9d001ecda6c957c9c2a56f6c.001.1","noaa_urn:oid:2.49.0.1.840.0.e4ee4718328ba8c1863443386a754d5cd6817390.001.1"] |
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 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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.