Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 1 June 2026 at 07:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 28 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 1:40AM CDT until June 1 at 2:15AM CDT by NWS Omaha/Valley NE
An estimated 621,079 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 9, 2026 · score 72 · 12.0 km
- April 23, 2026 · score 48 · 13.0 km
- June 1, 2026 · score 48 · 25.1 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 89 % 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 | 89% |
| Coordinates | 41.4436, -95.5696 |
| Nearest City | Council Bluffs (32 km) |
| Population Exposed | 621.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T06:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.261e7fe6fc553ffd8dbfd2b6d3d98517 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pottawattamie, IA; Douglas, NE; Washington, NE; Pottawattamie, IA; Pottawattamie, IA; Shelby, IA |
| Headline | Severe Thunderstorm Warning issued June 1 at 1:40AM CDT until June 1 at 2:15AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-06-01T02:15:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.261e7fe6fc553ffd8dbfd2b6d3d985176571e08e.001.1","noaa_urn:oid:2.49.0.1.840.0.ecba2f059d7bf328260a5219cc85e3026c244af4.001.1","noaa_urn:oid:2.49.0.1.840.0.b267e36b12245386afca5a7792458511f3fb1781.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Woodbine |
| Iem County | Harrison |
| Iem State | IA |
| Iem Wfo | OAX |
| MergedSources | [{"id":"iem_H_41.300_-96.250_1780281180000","source":"iem","severity":"low","severityValue":25,"timestamp":1780281180000,"latitude":41.3,"longitude":-96.25},{"id":"iem_H_41.300_-96.260_1780280340000","source":"iem","severity":"low","severityValue":25,"timestamp":1780280340000,"latitude":41.3,"longitude":-96.26},{"id":"iem_H_41.740_-95.710_1780289760000","source":"iem","severity":"low","severityValue":25,"timestamp":1780289760000,"latitude":41.74,"longitude":-95.71}] |
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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