Right now
The most recent data we hold from NOAA arrived 9 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 09:45 UTC. It is kept here as a record.
It is the 8th strongest of the 44 detections recorded within 20 km of this point since 17 April 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: Flash Flood Warning issued June 5 at 11:03PM CDT until June 6 at 4:45AM CDT by NWS Des Moines IA
An estimated 462,966 people live within 50 km of this point.
Nearby, since 17 April 2026
- June 6, 2026 · score 67 · 8.3 km
- September 8, 2026 · score 37 · 12.5 km
- July 21, 2026 · score 37 · 13.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 41.4513, -93.3275 |
| Nearest City | Indianola (22 km) |
| Population Exposed | 463.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T04:03:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f07b58100de65a23bab3c36cf3777373aa034e2a.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Marion, IA; Warren, IA |
| Headline | Flash Flood Warning issued June 5 at 11:03PM CDT until June 6 at 4:45AM CDT by NWS Des Moines IA |
| Expires | 2026-06-06T04:45:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
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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