Right now
The most recent data we hold from NOAA arrived 2 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 9 July 2026 at 02:30 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. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 8 at 6:37PM CDT until July 8 at 9:30PM CDT by NWS La Crosse WI
Urban PEI: 42,237 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- July 9, 2026 · score 43 · 9.6 km
- July 20, 2026 · score 39 · 9.9 km
- May 26, 2026 · score 34 · 18.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 43.6379, -92.9806 |
| Nearest City | Austin (4 km) |
| Urban exposure index (PEI) | 42.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-08T23:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.3255475a4fede6171363efc60d8da01b |
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: 2026-07-08T23:37:00.000Z.
First archived: 2026-07-09T00:27:26.151Z. 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 | Howard, IA; Mitchell, IA; Fillmore, MN; Mower, MN; Mower, MN; Freeborn, MN |
| Headline | Flash Flood Warning issued July 8 at 6:37PM CDT until July 8 at 9:30PM CDT by NWS La Crosse WI |
| Expires | 2026-07-08T21:30:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3255475a4fede6171363efc60d8da01bccb6b55a.001.1","noaa_urn:oid:2.49.0.1.840.0.0711217ee2337c17412e0c75cdeb3e9cc83943b4.001.1","noaa_urn:oid:2.49.0.1.840.0.968e66e80d119792652dcf3fe65b8a871550f47a.001.1","noaa_urn:oid:2.49.0.1.840.0.8d289158daabd875d0347f2c6b48165f7ebdda4a.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.
Review the area, threshold and delivery channel in your account.
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