Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 26 July 2026 at 01:51 UTC. It is kept here as a record.
No stronger detection stands among the 27 recorded within 20 km of this point since 17 March 2026 — 3 others scored the same. The last comparable one was on 28 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 25 at 7:41PM MDT until July 25 at 7:45PM MDT by NWS Billings MT
An estimated 117,116 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 43 out of 100, at 81 % 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 | 81% |
| Coordinates | 45.6906, -108.9332 |
| Nearest City | Billings (35 km) |
| Population Exposed | 117.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-26T01:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9045e76905b60e440a421650d5625aeb |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Stillwater, MT; Sweet Grass, MT; Yellowstone, MT; Carbon, MT; Stillwater, MT; Yellowstone, MT |
| Headline | Severe Thunderstorm Warning issued July 25 at 7:41PM MDT until July 25 at 7:45PM MDT by NWS Billings MT |
| Expires | 2026-07-25T19:51:00-06:00 |
| SenderName | NWS Billings MT |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9045e76905b60e440a421650d5625aeb3d67b8d6.001.1","noaa_urn:oid:2.49.0.1.840.0.1ae0c5142ccd405075acf9d19aaec26ef61735df.001.1","noaa_urn:oid:2.49.0.1.840.0.8ba847f1bb760b772f77c419aa816a156505204c.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 in this area?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.