This alert expired on 16 May 2026 at 03:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 43 detections recorded within 20 km of this point since 15 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: Severe Thunderstorm Warning issued May 15 at 10:35PM CDT until May 15 at 10:45PM CDT by NWS Omaha/Valley NE
An estimated 667,063 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 16, 2026 · score 48 · 5.2 km
- June 13, 2026 · score 48 · 16.5 km
- June 1, 2026 · score 48 · 18.2 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 48 / 100 |
| Our confidence | 90% |
| Coordinates | 41.4490, -96.1710 |
| Nearest City | Fremont (28 km) |
| Population Exposed | 667.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T03:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2d2cb3c767effe78da23723c2fe1333d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Douglas, NE; Washington, NE; Harrison, IA; Pottawattamie, IA; Shelby, IA; Dodge, NE; Douglas, NE; Saunders, NE; Washington, NE |
| Headline | Severe Thunderstorm Warning issued May 15 at 10:35PM CDT until May 15 at 10:45PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-15T22:45:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2d2cb3c767effe78da23723c2fe1333ddc719850.001.1","noaa_urn:oid:2.49.0.1.840.0.518a371c3cf5122479d4fcd91e85be678fa10ade.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 2 NW Fremont |
| Iem County | Dodge |
| Iem State | NE |
| Iem Wfo | OAX |
| Google News RssFeed | weather |
| Google News SourceName | KETV |
| MergedSources | [{"id":"iem_D_40.900_-95.670_1778887200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778887200000,"latitude":40.9,"longitude":-95.67},{"id":"iem_H_41.460_-96.510_1778900760000","source":"iem","severity":"low","severityValue":25,"timestamp":1778900760000,"latitude":41.46,"longitude":-96.51},{"id":"gnews_weather_494138_195","source":"google_news","severity":"medium","severityValue":40,"timestamp":1778898900000,"latitude":41.26,"longitude":-95.94}] |
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.
Want to know when something happens near Fremont?
Calamity.live data shows a weather event with CalamityScore 48/100, near Fremont (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.