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 4 July 2026 at 03:00 UTC. It is kept here as a record.
It is the 10th strongest of the 26 detections recorded within 20 km of this point since 27 April 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 8:21PM MDT until July 3 at 9:00PM MDT by NWS North Platte NE
Nearby, since 27 April 2026
- July 4, 2026 · score 46 · 5.8 km
- August 27, 2026 · score 28 · 11.8 km
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 | 0.70/1 |
| Coordinates | 42.0267, -101.6300 |
| Nearest City | North Platte (124 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-04T02:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.41a1584907656d50ee2b9beb5049b2da59171abf.001.1 |
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: 2026-07-04T02:21:00.000Z.
First archived: 2026-07-04T02:25:03.244Z. 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 | Grant, NE; Hooker, NE |
| Headline | Severe Thunderstorm Warning issued July 3 at 8:21PM MDT until July 3 at 9:00PM MDT by NWS North Platte NE |
| Expires | 2026-07-03T21:00:00-06:00 |
| SenderName | NWS North Platte NE |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 20 N Ellsworth |
| Iem County | Sheridan |
| Iem State | NE |
| Iem Wfo | LBF |
| Iem Remark | Time estimated from radar. |
| MergedSources | [{"id":"iem_H_42.000_-101.700_1783130220000","source":"iem","severity":"low","severityValue":25,"timestamp":1783130220000,"latitude":42,"longitude":-101.7},{"id":"iem_H_42.220_-101.860_1783127580000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127580000,"latitude":42.22,"longitude":-101.86},{"id":"iem_H_42.350_-102.330_1783124520000","source":"iem","severity":"low","severityValue":25,"timestamp":1783124520000,"latitude":42.35,"longitude":-102.33}] |
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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