This alert expired on 11 June 2026 at 11:00 UTC. It is kept here as a record.
No stronger detection stands among the 37 recorded within 20 km of this point since 15 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 11 at 5:22AM CDT until June 11 at 6:00AM CDT by NWS Omaha/Valley NE
An estimated 640,589 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 16, 2026 · score 48 · 4.7 km
- June 6, 2026 · score 48 · 6.9 km
- May 22, 2026 · score 72 · 10.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 72 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 72 / 100 |
| Our confidence | 81% |
| Coordinates | 40.8920, -95.8380 |
| Nearest City | Bellevue (28 km) |
| Population Exposed | 640.6K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-06-11T10:22:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.66d5ee83c2db4d27f7722af775adb707d91830f7.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fremont, IA; Mills, IA; Cass, NE |
| Headline | Tornado Warning issued June 11 at 5:22AM CDT until June 11 at 6:00AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-06-11T06:00:00-05:00 |
| 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 10 February 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.
Want to know when something happens near Bellevue?
Calamity.live data shows a weather event with CalamityScore 72/100, near Bellevue (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.