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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 23 June 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 27 recorded within 20 km of this point since 3 April 2026 — 19 others scored the same. The last comparable one was on 22 June 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 22 at 6:05PM MDT until June 22 at 6:15PM MDT by NWS Billings MT
Nearby, since 3 April 2026
- July 3, 2026 · score 22 · 0.0 km
- June 21, 2026 · score 22 · 0.0 km
- May 30, 2026 · score 22 · 0.0 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 67 % 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) | 22 / 100 |
| Our confidence | 67% |
| Coordinates | 45.3086, -106.4210 |
| Nearest City | Sheridan (71 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-23T00:05:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6dde5a96187f6b590abe32dbb17bc76b0b0ef2d4.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Rosebud, MT |
| Headline | Flash Flood Warning issued June 22 at 6:05PM MDT until June 22 at 6:15PM MDT by NWS Billings MT |
| Expires | 2026-06-22T18:15:00-06:00 |
| SenderName | NWS Billings MT |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 0.59 |
| Iem Unit | Inch |
| Iem City | 8 NNW Quietus |
| Iem County | Rosebud |
| Iem State | MT |
| Iem Wfo | BYZ |
| MergedSources | [{"id":"iem_H_45.190_-106.360_1782160800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782160800000,"latitude":45.19,"longitude":-106.36},{"id":"iem_H_44.980_-106.850_1782169500000","source":"iem","severity":"low","severityValue":25,"timestamp":1782169500000,"latitude":44.98,"longitude":-106.85},{"id":"iem_R_45.190_-106.360_1782161100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161100000,"latitude":45.19,"longitude":-106.36}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.