Right now
The most recent data we hold from NOAA arrived 2 hours 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 31 May 2026 at 03:00 UTC. It is kept here as a record.
It is the 20th strongest of the 111 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 30 May 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 30 at 7:05PM MDT until May 30 at 9:00PM MDT by NWS Denver CO
Nearby, since 15 March 2026
- September 5, 2026 · score 16 · 0.0 km
- August 13, 2026 · score 22 · 0.0 km
- August 12, 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 60 % 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 | 60% |
| Coordinates | 39.1000, -105.4000 |
| Nearest City | Castle Rock (55 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-31T01:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.bffdd302cea4e1f91f38872cbfbdb9e9 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Phillips, CO; Sedgwick, CO; Yuma, CO |
| Headline | Severe Thunderstorm Watch issued May 30 at 7:05PM MDT until May 30 at 9:00PM MDT by NWS Denver CO |
| Expires | 2026-05-30T21:00:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bffdd302cea4e1f91f38872cbfbdb9e9214ac800.002.1","noaa_urn:oid:2.49.0.1.840.0.71595cd1fba209400b8638ab29f11ed796908fe3.003.1"] |
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.