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 6 June 2026 at 10:45 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 7 April 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: Flash Flood Warning issued June 6 at 1:21AM CDT until June 6 at 5:45AM CDT by NWS Des Moines IA
An estimated 466,831 people live within 50 km of this point.
Nearby, since 7 April 2026
- September 10, 2026 · score 37 · 12.7 km
- September 9, 2026 · score 37 · 12.7 km
- July 21, 2026 · score 37 · 16.8 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 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 41.3199, -93.6651 |
| Nearest City | Indianola (10 km) |
| Population Exposed | 466.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T06:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.4927e34c563a7d8868eb86fb7bb60c64 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Marion, IA; Adair, IA; Adams, IA; Cass, IA; Clarke, IA; Madison, IA; Union, IA; Marion, IA; Warren, IA |
| Headline | Flash Flood Warning issued June 6 at 1:21AM CDT until June 6 at 5:45AM CDT by NWS Des Moines IA |
| Expires | 2026-06-06T05:45:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4927e34c563a7d8868eb86fb7bb60c6407a246a6.001.1","noaa_urn:oid:2.49.0.1.840.0.26245cce5dcd794cd998c841fb6eebf882443166.001.1","noaa_urn:oid:2.49.0.1.840.0.bf4cef56edb60bc3660bfa119bc4c1c706134a85.001.1"] |
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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