Right now
The most recent data we hold from NOAA arrived 22 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 31 July 2026 at 06:00 UTC. It is kept here as a record.
It is the 29th strongest of the 182 detections recorded within 20 km of this point since 27 April 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 Watch issued July 30 at 9:10PM CDT until July 31 at 1:00AM CDT by NWS Omaha/Valley NE
Nearby, since 27 April 2026
- September 5, 2026 · score 16 · 0.0 km
- August 12, 2026 · score 22 · 0.0 km
- July 31, 2026 · score 22 · 0.0 km
How we know
11 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 | 0.72/1 |
| Coordinates | 41.5000, -99.9000 |
| Nearest City | North Platte (84 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-31T02:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.146230bb290082a569b6194367debd55 |
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: 2026-07-31T02:10:00.000Z.
First archived: 2026-07-31T03:05:39.156Z. 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 Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Antelope, NE; Boone, NE; Butler, NE; Cedar, NE; Colfax, NE; Cuming, NE; Dodge, NE; Gage, NE; Jefferson, NE; Knox, NE; Lancaster, NE; Madison, NE; Pierce, NE; Platte, NE; Saline, NE; Saunders, NE; Seward, NE; Stanton, NE; Wayne, NE; Adams, NE; Buffalo, NE; Clay, NE; Dawson, NE; Fillmore, NE; Franklin, NE; Furnas, NE; Gosper, NE; Greeley, NE; Hall, NE; Hamilton, NE; Harlan, NE; Howard, NE; Kearney, NE; Merrick, NE; Nance, NE; Nuckolls, NE; Phelps, NE; Polk, NE; Sherman, NE; Thayer, NE; Valley, NE; Webster, NE; York, NE |
| Headline | Severe Thunderstorm Watch issued July 30 at 9:10PM CDT until July 31 at 1:00AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-07-31T01:00:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.146230bb290082a569b6194367debd5594ba57ee.002.1","noaa_urn:oid:2.49.0.1.840.0.396b9225681200750ba8a9277a5401ee65062d1d.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 70 |
| Iem Unit | MPH |
| Iem City | Stapleton |
| Iem County | Logan |
| Iem State | NE |
| Iem Wfo | LBF |
| MergedSources | [{"id":"iem_G_41.490_-100.520_1785453600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785453600000,"latitude":41.49,"longitude":-100.52},{"id":"iem_G_41.370_-100.580_1785459600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785459600000,"latitude":41.37,"longitude":-100.58},{"id":"iem_H_41.480_-100.500_1785454800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785454800000,"latitude":41.48,"longitude":-100.5},{"id":"iem_G_41.490_-100.520_1785453000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785453000000,"latitude":41.49,"longitude":-100.52},{"id":"iem_G_40.890_-99.530_1785463680000","source":"iem","severity":"low","severityValue":25,"timestamp":1785463680000,"latitude":40.89,"longitude":-99.53},{"id":"iem_G_41.020_-99.620_1785462000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785462000000,"latitude":41.02,"longitude":-99.62},{"id":"iem_G_41.230_-100.120_1785457140000","source":"iem","severity":"low","severityValue":25,"timestamp":1785457140000,"latitude":41.23,"longitude":-100.12},{"id":"iem_G_41.230_-100.120_1785458400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785458400000,"latitude":41.23,"longitude":-100.12},{"id":"iem_D_41.480_-100.510_1785458400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785458400000,"latitude":41.48,"longitude":-100.51},{"id":"iem_G_41.480_-100.510_1785458400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785458400000,"latitude":41.48,"longitude":-100.51}] |
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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