Right now
The most recent data we hold from NOAA arrived 3 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 22 May 2026 at 00:45 UTC. It is kept here as a record.
No stronger detection stands among the 28 recorded within 20 km of this point since 16 May 2026 — 18 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 21 at 5:58PM MDT until May 21 at 6:45PM MDT by NWS Goodland KS
Nearby, since 16 May 2026
- June 23, 2026 · score 22 · 19.9 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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.59/1 |
| Coordinates | 40.3587, -103.0709 |
| Nearest City | Evans (137 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-21T23:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8e1569c38e7996a0400e4cea28e3d110 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-21T23:58:00.000Z.
First archived: 2026-05-22T00:00:00.295Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Yuma, CO; Logan, CO; Banner, NE; Cheyenne, NE; Kimball, NE; Morrill, NE and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 21 at 5:58PM MDT until May 21 at 6:45PM MDT by NWS Goodland KS |
| Expires | 2026-05-21T18:45:00-06:00 |
| SenderName | NWS Goodland KS |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8e1569c38e7996a0400e4cea28e3d110cbc8cf73.001.1","noaa_urn:oid:2.49.0.1.840.0.76b24ebae312fe9240d8c7cf87abd394e3676d9c.001.1","noaa_urn:oid:2.49.0.1.840.0.d088dbc362035357fa738c18aa0bc0eeeb2c2af3.001.1","noaa_urn:oid:2.49.0.1.840.0.3d1f101c509539c592872a195013e89bf51a0f1d.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.
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