Right now
The most recent data we hold from NOAA arrived 5 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 16 May 2026 at 05:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Tornado Warning issued May 16 at 12:07AM CDT until May 16 at 12:30AM CDT by NWS Milwaukee/Sullivan WI
Urban PEI: 58,799 within a heuristic 50 km radius; not unique people.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 63 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Critical |
| Calamity Score (ours) | 63 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 42.7450, -90.2900 |
| Nearest City | Dubuque (41 km) |
| Urban exposure index (PEI) | 58.8K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-05-16T05:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.02918c2c679d40831acd5b112c206ba6 |
Physical priority index · v1. 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: 2026-05-16T05:07:00.000Z.
First archived: 2026-05-16T05:10:52.768Z. Material modification: not recorded.
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 | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lafayette, WI; Iowa, WI; Lafayette, WI |
| Headline | Tornado Warning issued May 16 at 12:07AM CDT until May 16 at 12:30AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-05-16T00:30:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.02918c2c679d40831acd5b112c206ba6d91ee779.001.1","noaa_urn:oid:2.49.0.1.840.0.2046954042a34b5f790ed51439c50583cc19aa5b.001.1"] |
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 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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