Right now
The most recent data we hold from NOAA arrived 4 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 3 July 2026 at 17:30 UTC. It is kept here as a record.
No stronger detection stands among the 68 recorded within 20 km of this point since 16 March 2026 — 24 others scored the same. The last comparable one was on 3 July 2026. 28 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 2 at 9:27PM CDT until July 4 at 2:20AM CDT by NWS La Crosse WI
Urban PEI: 102,776 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 4, 2026 · score 43 · 10.3 km
- July 3, 2026 · score 43 · 11.3 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.
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) | 43 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 43.4380, -91.4060 |
| Nearest City | La Crosse (42 km) |
| Urban exposure index (PEI) | 102.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T06:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.acd7b8e6a42b56270bef4fe041ecf882 |
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: 2026-07-04T06:00:00.000Z.
First archived: 2026-07-03T05:27:54.890Z. 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 | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Winneshiek, IA; Allamakee, IA; Fillmore, MN; Houston, MN and 5 more areas |
| Headline | Flood Warning issued July 2 at 9:27PM CDT until July 4 at 2:20AM CDT by NWS La Crosse WI |
| Expires | 2026-07-03T12:30:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.acd7b8e6a42b56270bef4fe041ecf88269ca46a9.001.1","noaa_urn:oid:2.49.0.1.840.0.acd7b8e6a42b56270bef4fe041ecf88269ca46a9.002.1","noaa_urn:oid:2.49.0.1.840.0.794178c31c8c7cc9d99c020e31d1e9b22ac538c8.001.1","noaa_urn:oid:2.49.0.1.840.0.c23980cce3c61c35a2e9791399d4df383b00365d.002.1","noaa_urn:oid:2.49.0.1.840.0.c23980cce3c61c35a2e9791399d4df383b00365d.001.1","noaa_urn:oid:2.49.0.1.840.0.e2342553da9291d36639e25367c8e8bdd57007fe.003.1","noaa_urn:oid:2.49.0.1.840.0.e2342553da9291d36639e25367c8e8bdd57007fe.002.1","noaa_urn:oid:2.49.0.1.840.0.e2342553da9291d36639e25367c8e8bdd57007fe.001.1","noaa_urn:oid:2.49.0.1.840.0.e2342553da9291d36639e25367c8e8bdd57007fe.004.1","noaa_urn:oid:2.49.0.1.840.0.738b2ae53b88a7215df435785a9c1c2486e4cef9.001.1","noaa_urn:oid:2.49.0.1.840.0.5352f7716301683d7039aae9c57e22aa0e65f6fd.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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