Right now
The most recent data we hold from NOAA arrived 37 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
20 other detections within 20 km in the last 24 hours, the nearest 6 km from here.
This alert expired on 15 September 2026 at 02:30 UTC. It is kept here as a record.
It is the 12th strongest of the 46 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 14 at 8:40PM CDT until September 14 at 9:30PM CDT by NWS Omaha/Valley NE
Nearby, since 16 March 2026
- July 4, 2026 · score 22 · 12.8 km
- August 9, 2026 · score 22 · 21.4 km
- May 15, 2026 · score 48 · 22.5 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.71/1 |
| Coordinates | 40.7568, -95.4808 |
| Nearest City | Bellevue (55 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-15T01:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b454e280c57d9ff8d632ad921b174dca9f70ba53.001.1 |
Physical priority index · v5. 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: 2026-09-15T01:40:00.000Z.
First archived: 2026-09-15T01:45:39.460Z. 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 | Gage, NE; Johnson, NE; Pawnee, NE; Adair, IA; Adams, IA; Cass, IA; Dallas, IA; Guthrie, IA; Madison, IA; Union, IA; Fremont, IA; Page, IA |
| Headline | Severe Thunderstorm Warning issued September 14 at 8:40PM CDT until September 14 at 9:30PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-09-14T21:30:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b454e280c57d9ff8d632ad921b174dca9f70ba53.001.1","noaa_urn:oid:2.49.0.1.840.0.1b88d4437a502b86446e921d62075421207946b8.001.1","noaa_urn:oid:2.49.0.1.840.0.de7c9cdfcf1b297ba5d0de1cf7bb99ef92280b72.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 63 |
| Spc Location | 8 WSW Sidney |
| Spc County | Fremont |
| Spc State | IA |
| Spc Comments | Measured gust from an IADOT mesonet station. (OAX) |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | 5 W Treynor |
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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