This alert expired on 5 July 2026 at 06:30 UTC. It is kept here as a record.
It is the 8th strongest of the 58 detections recorded within 20 km of this point since 14 April 2026. Another comparable one was recorded here earlier the same day. 17 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 4 at 10:17AM CDT until July 5 at 8:48AM CDT by NWS La Crosse WI
An estimated 109,715 people live within 50 km of this point.
Nearby, since 14 April 2026
- July 26, 2026 · score 43 · 10.3 km
- July 10, 2026 · score 43 · 16.2 km
- July 13, 2026 · score 43 · 18.2 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, at 81 % 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 42.5422, -92.1484 |
| Nearest City | Waterloo (17 km) |
| Population Exposed | 109.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T20:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.0682b85f8d84dc1221053a757f98dadc |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Houston, MN; Black Hawk, IA; Polk, IA and 9 more areas |
| Headline | Flood Warning issued July 4 at 10:17AM CDT until July 5 at 8:48AM CDT by NWS La Crosse WI |
| Expires | 2026-07-05T01:30:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 15 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0682b85f8d84dc1221053a757f98dadc15d85d56.001.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.004.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.005.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.001.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.003.1","noaa_urn:oid:2.49.0.1.840.0.348d99f348a0ced8103c1b12442d25afe1325d0c.001.1","noaa_urn:oid:2.49.0.1.840.0.7da4045512d251e558d2e33ce358447c253a5b9a.001.1","noaa_urn:oid:2.49.0.1.840.0.44a9a15272ba63197c42e1d228ea58bf85f724b1.001.1","noaa_urn:oid:2.49.0.1.840.0.f48d7e8135b7a04f2e88b8088078197409c68bdb.002.1","noaa_urn:oid:2.49.0.1.840.0.f48d7e8135b7a04f2e88b8088078197409c68bdb.004.1","noaa_urn:oid:2.49.0.1.840.0.f48d7e8135b7a04f2e88b8088078197409c68bdb.005.1","noaa_urn:oid:2.49.0.1.840.0.f48d7e8135b7a04f2e88b8088078197409c68bdb.001.1","noaa_urn:oid:2.49.0.1.840.0.f48d7e8135b7a04f2e88b8088078197409c68bdb.003.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.002.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.006.1"] |
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 near Waterloo?
Calamity.live data shows a weather event with CalamityScore 43/100, near Waterloo (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.