Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
5 other detections within 20 km in the last 24 hours, the nearest 10 km from here.
This alert expired on 7 September 2026 at 19:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 11 detections recorded within 20 km of this point since 8 April 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 7 at 12:59PM MDT until September 7 at 1:30PM MDT by NWS Glasgow MT
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 71 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 71% |
| Coordinates | 46.8175, -107.8633 |
| Nearest City | Billings (125 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-07T18:59:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2b5c724ba12a4b8b736e459765ef0ebdba62889b.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Garfield, MT; Petroleum, MT; Rosebud, MT; Treasure, MT |
| Headline | Severe Thunderstorm Warning issued September 7 at 12:59PM MDT until September 7 at 1:30PM MDT by NWS Glasgow MT |
| Expires | 2026-09-07T13:30:00-06:00 |
| SenderName | NWS Glasgow MT |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2b5c724ba12a4b8b736e459765ef0ebdba62889b.001.1","noaa_urn:oid:2.49.0.1.840.0.d03d527d39f774ab84fb1815481c43fc3e5be29c.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 63 |
| Spc Location | 1 NNW Winnett |
| Spc County | Petroleum |
| Spc State | MT |
| Spc Comments | Mesonet station MTWIN Winnett Mt-200 Mp 136.0. (GGW) |
| Iem TypeSummary | G |
| Iem Magnitude | 63 |
| Iem Unit | MPH |
| Iem City | 1 NNW Winnett |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.