This alert expired on 29 May 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 5 recorded within 20 km of this point since 29 May 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 28 at 7:03PM MDT until May 28 at 7:30PM MDT by NWS Missoula MT
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 59 % 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 | 59% |
| Coordinates | 46.4979, -115.4390 |
| Nearest City | Missoula (118 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-29T01:03:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clearwater, ID; Idaho, ID; Clearwater, ID; Lewis, ID and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 28 at 7:03PM MDT until May 28 at 7:30PM MDT by NWS Missoula MT |
| Expires | 2026-05-28T19:30:00-06:00 |
| SenderName | NWS Missoula MT |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d4eaa8b5e9afe9959c2fc1cd33c5d632280f12e6.001.1","noaa_urn:oid:2.49.0.1.840.0.04d877bbd2b4aa02d486d5e946a1bbe244728380.001.1","noaa_urn:oid:2.49.0.1.840.0.59de85e0f112ff1dfc29af54a387733c7896fc2e.001.1","noaa_urn:oid:2.49.0.1.840.0.d01d5039c429d53a850747ed29477c3953994c18.001.1"] |
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 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, near Missoula (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.