This alert expired on 29 May 2026 at 08:00 UTC. It is kept here as a record.
No stronger detection stands among the 21 recorded within 20 km of this point since 13 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 28 at 11:51PM PDT until May 29 at 12:00AM PDT by NWS Spokane WA
Nearby, since 13 March 2026
- May 14, 2026 · score 22 · 0.0 km
- May 13, 2026 · score 22 · 0.0 km
- March 18, 2026 · score 22 · 0.0 km
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 61 % 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 | 61% |
| Coordinates | 44.2000, -114.4000 |
| Nearest City | Boise (158 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-29T06:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b031f7131117f5756dc70e7e80f73127a840ca26.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Boundary, ID; Chelan, WA; Douglas, WA; Ferry, WA; Okanogan, WA; Pend Oreille, WA; Stevens, WA |
| Headline | Severe Thunderstorm Watch issued May 28 at 11:51PM PDT until May 29 at 12:00AM PDT by NWS Spokane WA |
| Expires | 2026-05-29T01:00:00-07:00 |
| SenderName | NWS Spokane WA |
| HasExactCoords | false |
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.