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 11 June 2026 at 18:15 UTC. It is kept here as a record.
It is the 9th strongest of the 30 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 11 at 9:46AM CDT until June 11 at 1:15PM CDT by NWS Des Moines IA
Nearby, since 15 March 2026
- August 6, 2026 · score 22 · 5.3 km
- June 12, 2026 · score 22 · 5.3 km
- June 10, 2026 · score 16 · 19.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 16 / 100 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 40.6372, -93.8792 |
| Nearest City | Indianola (85 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-11T14:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.1e47e3ff96638a0732f2b915da268045 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-11T14:46:00.000Z.
First archived: 2026-06-11T14:58:05.233Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Adair, IA; Adams, IA; Madison, IA; Union, IA; Grundy, MO; Mercer, MO; Putnam, MO; Sullivan, MO; Gentry, MO; Grundy, MO; Harrison, MO; Mercer, MO; Worth, MO |
| Headline | Flash Flood Warning issued June 11 at 9:46AM CDT until June 11 at 1:15PM CDT by NWS Des Moines IA |
| Expires | 2026-06-11T13:15:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1e47e3ff96638a0732f2b915da2680450475450f.001.1","noaa_urn:oid:2.49.0.1.840.0.eb5accc31c91adf41f49e11b0c29f7e2d2a04296.001.1","noaa_urn:oid:2.49.0.1.840.0.962fc12b600bc36dc62b8c69e94ac741150929de.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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