This alert expired on 28 May 2026 at 01:00 UTC. It is kept here as a record.
It is the 4th strongest of the 34 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 27 at 7:17PM CDT until May 27 at 8:00PM CDT by NWS La Crosse WI
An estimated 17,897 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 12, 2026 · score 34 · 16.7 km
- July 2, 2026 · score 46 · 23.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 91 % 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) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 44.0250, -89.9271 |
| Nearest City | Wisconsin Rapids (40 km) |
| Population Exposed | 17.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-28T00:17:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.99c7d4ec8662bc012d12cf5dbc422d04 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jackson, WI; Marquette, WI |
| Headline | Severe Thunderstorm Warning issued May 27 at 7:17PM CDT until May 27 at 8:00PM CDT by NWS La Crosse WI |
| Expires | 2026-05-27T20:00:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.99c7d4ec8662bc012d12cf5dbc422d04e00cf538.001.1","noaa_urn:oid:2.49.0.1.840.0.2e3d92e0963b13c223729d7a8612da81642afb46.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 3 W Plover |
| Iem County | Portage |
| Iem State | WI |
| Iem Wfo | GRB |
| MergedSources | [{"id":"iem_G_44.360_-89.840_1779922920000","source":"iem","severity":"low","severityValue":25,"timestamp":1779922920000,"latitude":44.36,"longitude":-89.84},{"id":"iem_H_44.450_-89.600_1779921480000","source":"iem","severity":"low","severityValue":25,"timestamp":1779921480000,"latitude":44.45,"longitude":-89.6}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.