This alert expired on 2 July 2026 at 13:00 UTC. It is kept here as a record.
It is the 7th strongest of the 23 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 2 at 5:59AM CDT until July 2 at 8:00AM CDT by NWS La Crosse WI
Nearby, since 15 March 2026
- May 18, 2026 · score 43 · 12.4 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 70 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 22 / 100 |
| Our confidence | 70% |
| Coordinates | 43.6232, -91.9232 |
| Nearest City | Winona (53 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-02T10:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.6dd4901569a315837cb7f623da5b66c9 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Houston, MN; Fillmore, MN; Houston, MN; Mower, MN |
| Headline | Flash Flood Warning issued July 2 at 5:59AM CDT until July 2 at 8:00AM CDT by NWS La Crosse WI |
| Expires | 2026-07-02T08:00:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6dd4901569a315837cb7f623da5b66c99002b722.001.1","noaa_urn:oid:2.49.0.1.840.0.4089f792a4db100622809cfec6c45537a0c60a83.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 2.75 |
| Iem Unit | Inch |
| Iem City | Galesville |
| Iem County | Trempealeau |
| Iem State | WI |
| Iem Wfo | ARX |
| MergedSources | [{"id":"iem_F_43.710_-92.700_1782985080000","source":"iem","severity":"low","severityValue":25,"timestamp":1782985080000,"latitude":43.71,"longitude":-92.7},{"id":"iem_R_43.550_-92.010_1782968400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782968400000,"latitude":43.55,"longitude":-92.01},{"id":"iem_R_43.690_-92.710_1782982800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782982800000,"latitude":43.69,"longitude":-92.71},{"id":"iem_R_43.710_-92.270_1782976680000","source":"iem","severity":"low","severityValue":25,"timestamp":1782976680000,"latitude":43.71,"longitude":-92.27},{"id":"iem_R_43.660_-92.710_1782982200000","source":"iem","severity":"low","severityValue":25,"timestamp":1782982200000,"latitude":43.66,"longitude":-92.71},{"id":"iem_R_44.080_-91.360_1782993900000","source":"iem","severity":"low","severityValue":25,"timestamp":1782993900000,"latitude":44.08,"longitude":-91.36}] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.