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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 28 May 2026 at 00:15 UTC. It is kept here as a record.
It is the 4th strongest of the 48 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 27 at 6:55PM CDT until May 27 at 7:15PM CDT by NWS Green Bay WI
An estimated 17,897 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 12, 2026 · score 34 · 5.4 km
- May 28, 2026 · score 34 · 14.2 km
- July 2, 2026 · score 46 · 18.1 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.
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) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 44.0243, -89.7492 |
| Nearest City | Wisconsin Rapids (40 km) |
| Population Exposed | 17.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T23:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ac4750892d913315412b8bcb9de12e6a |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Waushara, WI; Jackson, WI; Marquette, WI |
| Headline | Severe Thunderstorm Warning issued May 27 at 6:55PM CDT until May 27 at 7:15PM CDT by NWS Green Bay WI |
| Expires | 2026-05-27T19:15:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ac4750892d913315412b8bcb9de12e6aa740d487.001.1","noaa_urn:oid:2.49.0.1.840.0.ac6df875cc15dfa84d21db988e69aac3a0edd572.001.1","noaa_urn:oid:2.49.0.1.840.0.6775a4539827eddf0cb40961f776fd10e62a8c5b.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 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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