Right now
The most recent data we hold from NOAA arrived 25 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 03:45 UTC. It is kept here as a record.
It is the 19th strongest of the 40 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 24 at 8:59PM MDT until June 24 at 9:45PM MDT by NWS Denver CO
Nearby, since 15 March 2026
- May 30, 2026 · score 46 · 11.7 km
How we know
9 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 | 0.70/1 |
| Coordinates | 40.4236, -102.4344 |
| Nearest City | North Platte (160 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-25T02:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ca515fb93842148eab17f6591b244ab4 |
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: 2026-06-25T02:59:00.000Z.
First archived: 2026-06-25T03:01:31.774Z. 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 | Morgan, CO; Washington, CO; Morgan, CO; Phillips, CO; Sedgwick, CO and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 24 at 8:59PM MDT until June 24 at 9:45PM MDT by NWS Denver CO |
| Expires | 2026-06-24T21:45:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ca515fb93842148eab17f6591b244ab456ab7de9.001.1","noaa_urn:oid:2.49.0.1.840.0.94a1415da87363d2481e331983b96122efe0251e.001.1","noaa_urn:oid:2.49.0.1.840.0.11de4fdc1d5ce0de5590b27ddae38c39dd081599.001.1","noaa_urn:oid:2.49.0.1.840.0.425a18d835ced6799f12c503a8930b552330ba3b.001.1","noaa_urn:oid:2.49.0.1.840.0.e6eeadca21dac95f7446b5fb703e7e273640f37b.001.1","noaa_urn:oid:2.49.0.1.840.0.3d488b1acde146e9194f28ca58b04f4d4625a7d3.001.1","noaa_urn:oid:2.49.0.1.840.0.9c2c52de6159b40a585cb40451c34c5bcca4effa.002.1","noaa_urn:oid:2.49.0.1.840.0.7938beca417b186a5289b5fabf07cc0b19666336.001.1"] |
| 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_H_40.790_-102.950_1782346560000","source":"iem","severity":"low","severityValue":25,"timestamp":1782346560000,"latitude":40.79,"longitude":-102.95},{"id":"iem_H_40.580_-102.720_1782349200000","source":"iem","severity":"low","severityValue":25,"timestamp":1782349200000,"latitude":40.58,"longitude":-102.72},{"id":"iem_G_40.160_-103.230_1782344280000","source":"iem","severity":"low","severityValue":25,"timestamp":1782344280000,"latitude":40.16,"longitude":-103.23},{"id":"iem_G_40.170_-103.220_1782343740000","source":"iem","severity":"low","severityValue":25,"timestamp":1782343740000,"latitude":40.17,"longitude":-103.22},{"id":"iem_H_40.570_-102.680_1782348840000","source":"iem","severity":"low","severityValue":25,"timestamp":1782348840000,"latitude":40.57,"longitude":-102.68},{"id":"iem_H_40.530_-102.630_1782349440000","source":"iem","severity":"low","severityValue":25,"timestamp":1782349440000,"latitude":40.53,"longitude":-102.63},{"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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