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.
One other detection within 20 km in the last 24 hours, 10 km from here.
This alert is in force until 6 September 2026, 23:00 UTC.
It is the 15th strongest of the 54 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 6 at 12:02PM CDT until September 6 at 6:00PM CDT by NWS Des Moines IA
Nearby, since 15 March 2026
- September 6, 2026 · score 16 · 10.4 km
- May 18, 2026 · score 46 · 14.1 km
- June 24, 2026 · score 22 · 17.0 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, at 62 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. 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 |
| Our confidence | 62% |
| Coordinates | 43.3973, -95.2827 |
| Nearest City | Sioux Falls (118 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-06T17:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0a44449c2a88ebee49a94e01c88d2beb94ec4e85.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Emmet, IA; Palo Alto, IA; Lyon, IA; Osceola, IA; Nobles, MN |
| Headline | Flash Flood Warning issued September 6 at 12:02PM CDT until September 6 at 6:00PM CDT by NWS Des Moines IA |
| Expires | 2026-09-06T18:00:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0a44449c2a88ebee49a94e01c88d2beb94ec4e85.001.1","noaa_urn:oid:2.49.0.1.840.0.35b5ee275bc787498b802595b6d6a2e53537ba90.001.1"] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.