Right now
The most recent data we hold from NOAA arrived 10 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 6 June 2026 at 10:30 UTC. It is kept here as a record.
It is the 18th strongest of the 38 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 5 at 11:23PM CDT until June 6 at 5:30AM CDT by NWS Des Moines IA
An estimated 91,941 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 11, 2026 · score 43 · 7.3 km
- September 2, 2026 · score 32 · 8.0 km
- June 6, 2026 · score 41 · 11.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 81 % 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) | 39 / 100 |
| Our confidence | 81% |
| Coordinates | 40.7670, -96.0044 |
| Nearest City | Bellevue (43 km) |
| Population Exposed | 91.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T04:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.2792ec1a743beb5fcc0bf96d9ee93245 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Adair, IA; Adams, IA; Cass, IA; Clarke, IA; Madison, IA; Union, IA; Marion, IA; Warren, IA; Mills, IA; Cass, NE; Sarpy, NE and 4 more areas |
| Headline | Flash Flood Warning issued June 5 at 11:23PM CDT until June 6 at 5:30AM CDT by NWS Des Moines IA |
| Expires | 2026-06-06T05:30:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2792ec1a743beb5fcc0bf96d9ee9324564eb813b.001.1","noaa_urn:oid:2.49.0.1.840.0.f07b58100de65a23bab3c36cf3777373aa034e2a.001.1","noaa_urn:oid:2.49.0.1.840.0.51d1f818e1494f7a22880afd54149f1fcd32ce4b.001.1","noaa_urn:oid:2.49.0.1.840.0.aca2785b830d0fd572ebe92da48ac3c83990a82b.001.1","noaa_urn:oid:2.49.0.1.840.0.a2575ecd5294f05f9fc4797477ecdc4ff8f85951.001.1","noaa_urn:oid:2.49.0.1.840.0.148efef689b25646507a4e45cd41defd69a426fb.001.1","noaa_urn:oid:2.49.0.1.840.0.eaffc5e229272f3ee50a54c41ef6c0d2a3e1a981.001.1","noaa_urn:oid:2.49.0.1.840.0.aa6039cb37ad5b81f89b6a97e5b1e5bfbed9467d.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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