This alert expired on 3 August 2026 at 22:03 UTC. It is kept here as a record.
It is the 3rd strongest of the 41 detections recorded within 20 km of this point since 13 April 2026. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 3 at 2:53PM MST until August 3 at 3:00PM MST by NWS Tucson AZ
An estimated 347,351 people live within 50 km of this point.
Nearby, since 13 April 2026
- August 10, 2026 · score 43 · 3.1 km
- July 21, 2026 · score 43 · 5.6 km
- August 27, 2026 · score 49 · 12.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 31.4636, -110.6950 |
| Nearest City | Nogales (26 km) |
| Population Exposed | 347.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-03T21:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f0db047b28a3ef5ec92ecbe65c7ef721 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cochise, AZ; Pima, AZ; Santa Cruz, AZ |
| Headline | Severe Thunderstorm Warning issued August 3 at 2:53PM MST until August 3 at 3:00PM MST by NWS Tucson AZ |
| Expires | 2026-08-03T15:03:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f0db047b28a3ef5ec92ecbe65c7ef7216741f576.001.1","noaa_urn:oid:2.49.0.1.840.0.ba55bd6d37e38689e6b3179b657d058e613281c7.001.1"] |
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 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 Nogales?
Calamity.live data shows a weather event with CalamityScore 43/100, near Nogales (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.