Right now
The most recent data we hold from NOAA arrived 5 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 29 May 2026 at 00:15 UTC. It is kept here as a record.
It is the strongest of the 23 detections recorded within 20 km of this point since 7 April 2026. The last comparable one was on 16 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 28 at 5:56PM MDT until May 28 at 6:15PM MDT by NWS Missoula MT
An estimated 22,052 people live within 50 km of this point.
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 83 % 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) | 34 / 100 |
| Our confidence | 83% |
| Coordinates | 48.4180, -114.1040 |
| Nearest City | Kalispell (29 km) |
| Population Exposed | 22.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-28T23:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d465c9e236a300fc51b4ee9f16182d8c1a127dd5.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Flathead, MT |
| Headline | Severe Thunderstorm Warning issued May 28 at 5:56PM MDT until May 28 at 6:15PM MDT by NWS Missoula MT |
| Expires | 2026-05-28T18:15:00-06:00 |
| SenderName | NWS Missoula MT |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.75 |
| Iem Unit | Inch |
| Iem City | 1 NNW Bigfork |
| Iem County | Flathead |
| Iem State | MT |
| Iem Wfo | MSO |
| MergedSources | [{"id":"iem_H_48.080_-114.080_1780011480000","source":"iem","severity":"low","severityValue":25,"timestamp":1780011480000,"latitude":48.08,"longitude":-114.08}] |
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.
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