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 28 May 2026 at 23:15 UTC. It is kept here as a record.
It is the only one we have recorded within 20 km of this point since 28 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 28 at 4:09PM MDT until May 28 at 5:15PM MDT by NWS Boise ID
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 58 % 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 | 58% |
| Coordinates | 43.9119, -118.2834 |
| Nearest City | Caldwell (131 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-28T22:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.00b7684a0da1adabea5496b800e49d93 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ada, ID; Boise, ID; Canyon, ID; Elmore, ID; Gem, ID; Payette, ID; Valley, ID; Washington, ID; Adams, ID; Washington, ID; Baker, OR; Harney, OR and 3 more areas |
| Headline | Severe Thunderstorm Warning issued May 28 at 4:09PM MDT until May 28 at 5:15PM MDT by NWS Boise ID |
| Expires | 2026-05-28T17:15:00-06:00 |
| SenderName | NWS Boise ID |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.00b7684a0da1adabea5496b800e49d93dd85c124.001.1","noaa_urn:oid:2.49.0.1.840.0.0cf497d195d432205a97dfb7e4e8cd50872de2b5.001.1","noaa_urn:oid:2.49.0.1.840.0.bb19e86c7540f239dc4575e0f915c8d4347be7e0.001.1","noaa_urn:oid:2.49.0.1.840.0.dd04f1c23e6cf1567c089956a43e62e71cb5d89f.001.1","noaa_urn:oid:2.49.0.1.840.0.bb718e3f01988dc6ce65fbdcc1d601de242da6b7.001.1","noaa_urn:oid:2.49.0.1.840.0.cd566ee8f1ed4bcae70a00039984079c288f957a.001.1","noaa_urn:oid:2.49.0.1.840.0.b83e48d90940342a841d16737fe58f51f62356f2.001.1"] |
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 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.