Right now
The most recent data we hold from NOAA arrived 11 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
30 other detections within 20 km in the last 24 hours, the nearest 4 km from here.
This alert expired on 15 September 2026 at 00:30 UTC. It is kept here as a record.
It is the 6th strongest of the 69 detections recorded within 20 km of this point since 16 March 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 6:55PM CDT until September 14 at 7:30PM CDT by NWS Omaha/Valley NE
Urban PEI: 91,941 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 14, 2026 · score 63 · 3.9 km
- September 2, 2026 · score 32 · 6.7 km
- September 14, 2026 · score 63 · 7.1 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
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 | 0.85/1 |
| Coordinates | 40.7700, -95.9890 |
| Nearest City | Bellevue (42 km) |
| Urban exposure index (PEI) | 91.9K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-14T23:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.dad1985ac52b99f78aabd10211ffaa72a1a723cc.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: 2026-09-14T23:55:00.000Z.
First archived: 2026-09-14T23:57:15.245Z. 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; Mills, IA; Cass, NE; Otoe, NE; Fremont, IA; Cass, NE; Otoe, NE |
| Headline | Tornado Warning issued September 14 at 6:55PM 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 |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dad1985ac52b99f78aabd10211ffaa72a1a723cc.001.1","noaa_urn:oid:2.49.0.1.840.0.ec41d343cceb769cfa8c0f0bd0afe4493c14dd65.001.1"] |
| Google News RssFeed | weather |
| Google News SourceName | Lincoln Journal Star |
| MergedSources | [{"id":"gnews_weather_497062_211","source":"google_news","severity":"medium","severityValue":40,"timestamp":1789423200000,"latitude":40.8,"longitude":-96.67}] |
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.
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