Right now
The most recent data we hold from NOAA arrived 4 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 25 June 2026 at 01:45 UTC. It is kept here as a record.
It is the 9th strongest of the 136 detections recorded within 20 km of this point since 23 April 2026. The last comparable one was on 21 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 24 at 7:09PM MDT until June 24 at 7:45PM MDT by NWS Denver CO
Nearby, since 23 April 2026
- July 2, 2026 · score 22 · 14.9 km
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 | 41.0669, -103.0857 |
| Nearest City | Cheyenne (146 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-25T01:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e40e4f99dd2ac8d1c9f04ab4b566f8cb |
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: 2026-06-25T01:09:00.000Z.
First archived: 2026-06-25T01:11:11.886Z. 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 | Weld, CO; Yuma, CO; Goshen, WY; Platte, WY and 8 more areas |
| Headline | Severe Thunderstorm Warning issued June 24 at 7:09PM MDT until June 24 at 7:45PM MDT by NWS Denver CO |
| Expires | 2026-06-24T19:45:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e40e4f99dd2ac8d1c9f04ab4b566f8cb889a37a5.001.1","noaa_urn:oid:2.49.0.1.840.0.5ba12373c7e103b46eb74647d37a5c4e3c10f67d.001.1","noaa_urn:oid:2.49.0.1.840.0.8be6a8b54d2a84dead445b933eb875f34a000aea.001.1","noaa_urn:oid:2.49.0.1.840.0.19a9148649fadf977e7d009486570ddd9fe268d7.001.1","noaa_urn:oid:2.49.0.1.840.0.ea0ee73f412e4456641bd5da3cec32cefe11c399.001.1","noaa_urn:oid:2.49.0.1.840.0.c0ba6654cc165587d480c06050c87438ab68a014.001.1","noaa_urn:oid:2.49.0.1.840.0.b367d694cdf299006db42902f7ae6addf2032221.001.1","noaa_urn:oid:2.49.0.1.840.0.727fe9f58da94162f98d150b3ec7aaaa0f7bc96e.001.1","noaa_urn:oid:2.49.0.1.840.0.2cc23151daaaa517bd60df381af6ede5137e0f24.001.1","noaa_urn:oid:2.49.0.1.840.0.ed6efc7ea08715d0f14f03206d0f22c0177c9304.001.1","noaa_urn:oid:2.49.0.1.840.0.d44c154bffb440632bd5b44e8ea432ba2da4fbd4.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Chappell |
| Iem County | Deuel |
| Iem State | NE |
| Iem Wfo | LBF |
| Iem Remark | Mostly nickels with a few quarters. Time estimated from radar. |
| MergedSources | [{"id":"iem_T_40.700_-102.860_1782347100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782347100000,"latitude":40.7,"longitude":-102.86},{"id":"iem_H_41.090_-102.470_1782346320000","source":"iem","severity":"low","severityValue":25,"timestamp":1782346320000,"latitude":41.09,"longitude":-102.47}] |
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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