This alert expired on 15 March 2026 at 23:45 UTC. It is kept here as a record.
It is the 11th strongest of the 139 detections recorded within 20 km of this point since 10 March 2026. The last comparable one was on 15 March 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Storm Warning issued March 15 at 10:36AM CDT until March 16 at 3:00PM CDT by NWS Green Bay WI
Nearby, since 10 March 2026
- September 2, 2026 · score 16 · 0.0 km
- August 11, 2026 · score 22 · 0.0 km
- August 9, 2026 · score 22 · 0.0 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 67 % 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) | 22 / 100 |
| Our confidence | 67% |
| Coordinates | 43.8000, -89.6000 |
| Nearest City | Wisconsin Rapids (67 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-16T00:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6699f66bdd2e042632c607474c4c847e78bd291a.001.2 |
Score Breakdown
Technical Details
| Event | Storm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Rock Island Passage to Sturgeon Bay WI; Sturgeon Bay to Two Rivers WI; Two Rivers to Sheboygan WI |
| Headline | Storm Warning issued March 15 at 10:36AM CDT until March 16 at 3:00PM CDT by NWS Green Bay WI |
| Expires | 2026-03-15T18:45:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | false |
| Iem TypeSummary | S |
| Iem Magnitude | 9 |
| Iem Unit | Inch |
| Iem City | 2 S Berlin |
| Iem County | Green Lake |
| Iem State | WI |
| Iem Wfo | MKX |
| Iem Remark | Relayed from social media. |
| MergedSources | [{"id":"iem_S_43.950_-89.810_1773608400000","source":"iem","severity":"low","severityValue":25,"timestamp":1773608400000,"latitude":43.95,"longitude":-89.81},{"id":"iem_S_43.710_-89.900_1773603360000","source":"iem","severity":"low","severityValue":25,"timestamp":1773603360000,"latitude":43.71,"longitude":-89.9},{"id":"iem_S_43.970_-89.210_1773609300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773609300000,"latitude":43.97,"longitude":-89.21},{"id":"iem_S_44.340_-89.060_1773603000000","source":"iem","severity":"low","severityValue":25,"timestamp":1773603000000,"latitude":44.34,"longitude":-89.06},{"id":"iem_S_44.220_-89.770_1773598080000","source":"iem","severity":"low","severityValue":25,"timestamp":1773598080000,"latitude":44.22,"longitude":-89.77},{"id":"iem_S_44.060_-89.300_1773612300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773612300000,"latitude":44.06,"longitude":-89.3},{"id":"iem_S_43.940_-88.950_1773606600000","source":"iem","severity":"low","severityValue":25,"timestamp":1773606600000,"latitude":43.94,"longitude":-88.95}] |
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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Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.