Right now
The most recent data we hold from NOAA arrived 2 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 20 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 39 recorded within 20 km of this point since 15 March 2026 — 24 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 20 at 3:29PM MDT until June 20 at 4:15PM MDT by NWS Goodland KS
How we know
3 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 | 0.68/1 |
| Coordinates | 40.1218, -101.8064 |
| Nearest City | North Platte (141 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-20T21:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d8fd40f1cda22c49c9d26094408312d1 |
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: 2026-06-20T21:29:00.000Z.
First archived: 2026-06-20T21:37:21.373Z. 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; Decatur, KS; Rawlins, KS; Dundy, NE; Hitchcock, NE; Red Willow, NE; Yuma, CO; Dundy, NE |
| Headline | Severe Thunderstorm Warning issued June 20 at 3:29PM MDT until June 20 at 4:15PM MDT by NWS Goodland KS |
| Expires | 2026-06-20T16:15:00-06:00 |
| SenderName | NWS Goodland KS |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d8fd40f1cda22c49c9d26094408312d130e81203.001.1","noaa_urn:oid:2.49.0.1.840.0.828a10a4db442543b6023f9a214e2a9f5bed5958.001.1","noaa_urn:oid:2.49.0.1.840.0.71b7f1b3290da4c898616ec9075b634f1800a2a5.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | 4 N Wray |
| Iem County | Yuma |
| Iem State | CO |
| Iem Wfo | GLD |
| Iem Remark | Spotter network report of half dollar sized hail. |
| MergedSources | [{"id":"iem_G_40.100_-102.250_1781988900000","source":"iem","severity":"low","severityValue":25,"timestamp":1781988900000,"latitude":40.1,"longitude":-102.25},{"id":"iem_H_40.140_-102.230_1781989140000","source":"iem","severity":"low","severityValue":25,"timestamp":1781989140000,"latitude":40.14,"longitude":-102.23}] |
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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