This alert expired on 31 August 2026 at 02:30 UTC. It is kept here as a record.
No stronger detection stands among the 10 recorded within 20 km of this point since 30 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 30 at 6:44PM MST until August 30 at 7:30PM MST by NWS Tucson AZ
Nearby, since 30 March 2026
- August 11, 2026 · score 22 · 12.4 km
- August 31, 2026 · score 22 · 22.4 km
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 61 % 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 | 61% |
| Coordinates | 32.4380, -112.4388 |
| Nearest City | Maricopa (78 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-31T01:44:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pima, AZ; Maricopa, AZ |
| Headline | Severe Thunderstorm Warning issued August 30 at 6:44PM MST until August 30 at 7:30PM MST by NWS Tucson AZ |
| Expires | 2026-08-30T19:30:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.974574630e71d5a9385e860540b25f834f6ded54.001.1","noaa_urn:oid:2.49.0.1.840.0.b519c7749d88cf8a26d0efdc0e1519456bc285d9.001.1"] |
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, near Maricopa (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.