This alert expired on 7 May 2026 at 15:00 UTC. It is kept here as a record.
It is the 22nd strongest of the 58 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 18 April 2026.
What the source measured
NOAA reported: Flood Warning issued May 6 at 9:54PM CDT until May 7 at 10:00AM CDT by NWS Milwaukee/Sullivan WI
An estimated 348,802 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 24, 2026 · score 43 · 12.8 km
- July 28, 2026 · score 43 · 16.6 km
- July 3, 2026 · score 67 · 16.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 42.6343, -89.0614 |
| Nearest City | Janesville (6 km) |
| Population Exposed | 348.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-07T02:54:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.cda049b0f8bcd53ca9d940452600224eb72fd623.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Winnebago, IL; Rock, WI |
| Headline | Flood Warning issued May 6 at 9:54PM CDT until May 7 at 10:00AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-05-07T10:00:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
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 10 February 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 Janesville?
Calamity.live data shows a weather event with CalamityScore 37/100, near Janesville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.