This alert expired on 16 May 2026 at 05:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 20 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 17 April 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 16 at 12:19AM CDT until May 16 at 12:45AM CDT by NWS Milwaukee/Sullivan WI
An estimated 24,476 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 10, 2026 · score 22 · 9.6 km
- June 24, 2026 · score 63 · 14.2 km
- May 16, 2026 · score 58 · 14.4 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 90% |
| Coordinates | 42.6467, -89.9467 |
| Nearest City | Freeport (47 km) |
| Population Exposed | 24.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T05:19:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.28b69518bc25e02608d78e4efa831f953a6db586.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lafayette, WI |
| Headline | Tornado Warning issued May 16 at 12:19AM CDT until May 16 at 12:45AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-05-16T00:45:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 61 |
| Iem Unit | MPH |
| Iem City | 5 SSW Livingston |
| Iem County | Grant |
| Iem State | WI |
| Iem Wfo | ARX |
| MergedSources | [{"id":"iem_G_42.750_-90.680_1778906820000","source":"iem","severity":"low","severityValue":25,"timestamp":1778906820000,"latitude":42.75,"longitude":-90.68},{"id":"iem_G_42.840_-90.480_1778907000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778907000000,"latitude":42.84,"longitude":-90.48},{"id":"iem_G_42.840_-90.480_1778907180000","source":"iem","severity":"low","severityValue":25,"timestamp":1778907180000,"latitude":42.84,"longitude":-90.48}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 in this area?
Calamity.live data shows a weather event with CalamityScore 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.