This alert expired on 24 July 2026 at 05:00 UTC. It is kept here as a record.
No stronger detection stands among the 7 recorded within 20 km of this point since 7 April 2026 — one other scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 23 at 10:51PM MDT until July 23 at 11:00PM MDT by NWS Missoula MT
An estimated 34,190 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 34 out of 100, at 81 % 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 46.1216, -112.6005 |
| Nearest City | Butte (15 km) |
| Population Exposed | 34.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-24T04:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.87f5edaee2e24b4b4ae0a9cbacebefdccfab899d.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Deer Lodge, MT; Silver Bow, MT |
| Headline | Severe Thunderstorm Warning issued July 23 at 10:51PM MDT until July 23 at 11:00PM MDT by NWS Missoula MT |
| Expires | 2026-07-23T23:00:00-06:00 |
| SenderName | NWS Missoula MT |
| HasExactCoords | true |
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 34/100, near Butte (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.