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.
This alert expired on 20 September 2026 at 11:45 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flood Warning issued September 19 at 3:32PM CDT until September 21 at 3:32AM CDT by NWS La Crosse WI
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 v5. 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 | 43.2591, -91.5323 |
| Nearest City | La Crosse (65 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-20T10:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.27a7c7bb871fffb4c2e5ea69dfce62e1a5ae6b38.002.1 |
Physical priority index · v5. 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: 2026-09-20T10:48:00.000Z.
First archived: 2026-09-19T20:39:57.538Z. Material modification: 2026-09-20T01:29:51.574Z.
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 | Mower, MN; Fillmore, MN; Houston, MN; Houston, MN and 6 more areas |
| Headline | Flood Warning issued September 19 at 3:32PM CDT until September 21 at 3:32AM CDT by NWS La Crosse WI |
| Expires | 2026-09-20T06:45:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.27a7c7bb871fffb4c2e5ea69dfce62e1a5ae6b38.002.1","noaa_urn:oid:2.49.0.1.840.0.27a7c7bb871fffb4c2e5ea69dfce62e1a5ae6b38.001.1","noaa_urn:oid:2.49.0.1.840.0.706c382190966dd8b8a7bf706273f11b2ef9a0d7.001.1","noaa_urn:oid:2.49.0.1.840.0.706c382190966dd8b8a7bf706273f11b2ef9a0d7.002.1","noaa_urn:oid:2.49.0.1.840.0.53145235bf4d637917d5a898fe42dcbc6f7dcab0.002.1","noaa_urn:oid:2.49.0.1.840.0.53145235bf4d637917d5a898fe42dcbc6f7dcab0.001.1","noaa_urn:oid:2.49.0.1.840.0.53145235bf4d637917d5a898fe42dcbc6f7dcab0.003.1","noaa_urn:oid:2.49.0.1.840.0.6b9e301f68c8b9d8cdad839f21dd714504728e96.001.1","noaa_urn:oid:2.49.0.1.840.0.c8079876531af6f9c9f92dbaeeb1e11285bd3f7a.002.1","noaa_urn:oid:2.49.0.1.840.0.c8079876531af6f9c9f92dbaeeb1e11285bd3f7a.001.1","noaa_urn:oid:2.49.0.1.840.0.c8079876531af6f9c9f92dbaeeb1e11285bd3f7a.003.1","noaa_urn:oid:2.49.0.1.840.0.313fa7aa7a9f0488d346f10028f52d7ea29ea489.001.1","noaa_urn:oid:2.49.0.1.840.0.31eace1d205406decf93c4448b9e8ea1aea6e8e1.001.1"] |
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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