Right now
The most recent data we hold from NOAA arrived 19 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
4 other detections within 20 km in the last 24 hours, the nearest 18 km from here.
This alert expired on 15 September 2026 at 00:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 50 detections recorded within 20 km of this point since 15 May 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued September 14 at 6:48PM CDT until September 14 at 7:30PM CDT by NWS Omaha/Valley NE
Urban PEI: 75,020 within a heuristic 50 km radius; not unique people.
Nearby, since 15 May 2026
- June 11, 2026 · score 43 · 6.0 km
- September 14, 2026 · score 67 · 7.9 km
- September 14, 2026 · score 63 · 10.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 63 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 | Critical |
| Calamity Score (ours) | 63 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 40.7120, -96.0240 |
| Nearest City | Papillion (49 km) |
| Urban exposure index (PEI) | 75.0K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-14T23:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ec41d343cceb769cfa8c0f0bd0afe4493c14dd65.001.1 |
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: 2026-09-14T23:48:00.000Z.
First archived: 2026-09-14T23:51:54.016Z. 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 | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fremont, IA; Cass, NE; Otoe, NE |
| Headline | Tornado Warning issued September 14 at 6:48PM CDT until September 14 at 7:30PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-09-14T19:30:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?