Right now
The most recent data we hold from NOAA arrived 6 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 06:45 UTC. It is kept here as a record.
It is the 5th strongest of the 29 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 1:35AM CDT until June 1 at 1:45AM CDT by NWS Omaha/Valley NE
An estimated 604,158 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 9, 2026 · score 72 · 10.8 km
- April 23, 2026 · score 48 · 16.4 km
- May 22, 2026 · score 72 · 23.0 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 | 41.4775, -95.5786 |
| Nearest City | Council Bluffs (34 km) |
| Population Exposed | 604.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T06:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.073731fd09d5ac93319eb939cb373df0 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pottawattamie, IA; Pottawattamie, IA; Douglas, NE; Washington, NE; Pottawattamie, IA; Shelby, IA |
| Headline | Severe Thunderstorm Warning issued June 1 at 1:35AM CDT until June 1 at 1:45AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-06-01T01:45:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.073731fd09d5ac93319eb939cb373df0ba5a3e3a.002.1","noaa_urn:oid:2.49.0.1.840.0.8313177ca2cae98dfd767ad183635a4aecab14f4.001.1","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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