This alert expired on 22 March 2026 at 18:00 UTC. It is kept here as a record.
No stronger detection stands among the 72 recorded within 20 km of this point since 17 March 2026 — 66 others scored the same. The last comparable one was on 18 March 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Watch issued March 20 at 4:58PM MDT until March 22 at 12:00PM MDT by NWS Missoula MT
Nearby, since 17 March 2026
- August 30, 2026 · score 22 · 0.0 km
- July 26, 2026 · score 22 · 0.0 km
- July 25, 2026 · score 22 · 0.0 km
How we know
Confirmed by 10 independent sources, including NOAA.
Our own score for this event is 22 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 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 | 71% |
| Coordinates | 46.8000, -110.4000 |
| Nearest City | Great Falls (103 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-20T22:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ef55fb40385b323fecef67786f4f2cbcc3101024.001.1 |
Score Breakdown
Technical Details
| Event | Flood Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Lincoln, MT |
| Headline | Flood Watch issued March 20 at 4:58PM MDT until March 22 at 12:00PM MDT by NWS Missoula MT |
| Expires | 2026-03-22T12:00:00-06:00 |
| SenderName | NWS Missoula MT |
| HasExactCoords | false |
| Iem TypeSummary | N |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | 3 WNW Raynesford |
| Iem County | Cascade |
| Iem State | MT |
| Iem Wfo | TFX |
| Iem Remark | AWOS station K1AM Alpha. |
| MergedSources | [{"id":"iem_N_47.260_-110.590_1774035840000","source":"iem","severity":"low","severityValue":25,"timestamp":1774035840000,"latitude":47.26,"longitude":-110.59},{"id":"iem_N_47.250_-110.480_1774028700000","source":"iem","severity":"low","severityValue":25,"timestamp":1774028700000,"latitude":47.25,"longitude":-110.48},{"id":"iem_N_46.840_-110.700_1774035000000","source":"iem","severity":"low","severityValue":25,"timestamp":1774035000000,"latitude":46.84,"longitude":-110.7},{"id":"iem_N_47.250_-110.480_1774043100000","source":"iem","severity":"low","severityValue":25,"timestamp":1774043100000,"latitude":47.25,"longitude":-110.48},{"id":"iem_N_47.250_-110.480_1774031400000","source":"iem","severity":"low","severityValue":25,"timestamp":1774031400000,"latitude":47.25,"longitude":-110.48},{"id":"iem_N_46.160_-110.380_1774026720000","source":"iem","severity":"low","severityValue":25,"timestamp":1774026720000,"latitude":46.16,"longitude":-110.38},{"id":"iem_N_47.250_-110.480_1774032300000","source":"iem","severity":"low","severityValue":25,"timestamp":1774032300000,"latitude":47.25,"longitude":-110.48},{"id":"iem_N_46.160_-110.380_1774048320000","source":"iem","severity":"low","severityValue":25,"timestamp":1774048320000,"latitude":46.16,"longitude":-110.38},{"id":"iem_N_47.280_-110.800_1774027320000","source":"iem","severity":"low","severityValue":25,"timestamp":1774027320000,"latitude":47.28,"longitude":-110.8}] |
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.