This alert expired on 14 March 2026 at 19:45 UTC. It is kept here as a record.
It is the 4th strongest of the 20 detections recorded within 20 km of this point since 14 March 2026.
What the source measured
NOAA reported: Snow Squall Warning issued March 14 at 1:10PM MDT until March 14 at 1:45PM MDT by NWS Great Falls MT
Nearby, since 14 March 2026
- July 24, 2026 · score 34 · 3.3 km
- July 16, 2026 · score 34 · 9.7 km
- July 24, 2026 · score 22 · 17.4 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 69 % 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 | 69% |
| Coordinates | 46.3417, -111.4483 |
| Nearest City | Helena (53 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-14T19:10:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_50b6e39b77b6cd908d6901b68a1fd416f48f04e2_001_1 |
Score Breakdown
Technical Details
| Event | Snow Squall Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Broadwater, MT |
| Headline | Snow Squall Warning issued March 14 at 1:10PM MDT until March 14 at 1:45PM MDT by NWS Great Falls MT |
| Expires | 2026-03-14T13:45:00-06:00 |
| SenderName | NWS Great Falls MT |
| HasExactCoords | true |
| Iem TypeSummary | S |
| Iem Magnitude | 3 |
| Iem Unit | Inch |
| Iem City | 1 E East Helena |
| Iem County | Lewis and Clark |
| Iem State | MT |
| Iem Wfo | TFX |
| MergedSources | [{"id":"iem_S_46.600_-112.060_1773506400000","source":"iem","severity":"low","severityValue":25,"timestamp":1773506400000,"latitude":46.6,"longitude":-112.06},{"id":"iem_S_46.590_-111.890_1773505800000","source":"iem","severity":"low","severityValue":25,"timestamp":1773505800000,"latitude":46.59,"longitude":-111.89}] |
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.