This alert expired on 5 July 2026 at 23:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 14 detections recorded within 20 km of this point since 14 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 5 at 5:17PM MDT until July 5 at 5:45PM MDT by NWS Great Falls MT
Nearby, since 14 March 2026
- March 14, 2026 · score 22 · 17.5 km
- July 24, 2026 · score 34 · 18.6 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 57 % 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 | 57% |
| Coordinates | 46.4540, -111.2890 |
| Nearest City | Helena (59 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-05T23:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5f7791be9ddd8878cacc7878b9760f8c5128117f.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Broadwater, MT |
| Headline | Severe Thunderstorm Warning issued July 5 at 5:17PM MDT until July 5 at 5:45PM MDT by NWS Great Falls MT |
| Expires | 2026-07-05T17:45:00-06:00 |
| SenderName | NWS Great Falls 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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.