Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 21 June 2026 at 23:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 21 at 4:52PM MDT until June 21 at 5:30PM MDT by NWS Denver CO
How we know
4 recorded sources include NOAA; independence is not established by this count.
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 | 0.69/1 |
| Coordinates | 39.4633, -102.5291 |
| Nearest City | Parker (192 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-21T22:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b21c6217f44198fe38fc6183ac772ccf |
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: 2026-06-21T22:52:00.000Z.
First archived: 2026-06-21T22:55:36.403Z. 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 | Washington, CO; Rawlins, KS; Thomas, KS; Cheyenne, CO |
| Headline | Severe Thunderstorm Warning issued June 21 at 4:52PM MDT until June 21 at 5:30PM MDT by NWS Denver CO |
| Expires | 2026-06-21T17:30:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b21c6217f44198fe38fc6183ac772ccfaadcb930.001.1","noaa_urn:oid:2.49.0.1.840.0.d4c19e70f3d91bbffd7b0a3ef5d5253db1211b23.001.1","noaa_urn:oid:2.49.0.1.840.0.77e64fc0a1b4912f7dbc273c16c436271a8a99c8.001.1","noaa_urn:oid:2.49.0.1.840.0.0cade545d0b5ec973df836511068d39951a9cd13.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 67 |
| Iem Unit | MPH |
| Iem City | 2 NW Wray |
| Iem County | Yuma |
| Iem State | CO |
| Iem Wfo | GLD |
| Iem Remark | AWOS station K2V5 2 NW Wray. |
| MergedSources | [{"id":"iem_G_39.970_-102.200_1782076500000","source":"iem","severity":"low","severityValue":25,"timestamp":1782076500000,"latitude":39.97,"longitude":-102.2},{"id":"iem_G_39.780_-101.780_1782077940000","source":"iem","severity":"low","severityValue":25,"timestamp":1782077940000,"latitude":39.78,"longitude":-101.78},{"id":"iem_G_40.100_-102.250_1782075300000","source":"iem","severity":"low","severityValue":25,"timestamp":1782075300000,"latitude":40.1,"longitude":-102.25}] |
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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