This alert expired on 31 August 2026 at 02:30 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 12 July 2026 — 11 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 12 July 2026
- August 31, 2026 · score 22 · 0.4 km
- August 31, 2026 · score 22 · 22.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 66 % 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 | 66% |
| Coordinates | 32.2960, -112.2760 |
| Nearest City | Casa Grande (81 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 |
| 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 |
| Iem TypeSummary | 2 |
| Iem City | 10 ENE Ajo |
| Iem County | Pima |
| Iem State | AZ |
| Iem Wfo | TWC |
| Iem Remark | Dust storm east of Ajo moving north. Visibility at least below one mile. Social media photos likely shows as low as one quarter of a mile. |
| MergedSources | [{"id":"iem_2_32.420_-112.710_1788139920000","source":"iem","severity":"low","severityValue":25,"timestamp":1788139920000,"latitude":32.42,"longitude":-112.71}] |
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 Casa Grande (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.