This alert expired on 11 June 2026 at 02:05 UTC. It is kept here as a record.
It is the 20th strongest of the 61 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 8:55PM CDT until June 10 at 9:00PM CDT by NWS Green Bay WI
Nearby, since 15 March 2026
- July 2, 2026 · score 34 · 14.6 km
- June 24, 2026 · score 43 · 19.1 km
- June 16, 2026 · score 43 · 19.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 44.1325, -89.1746 |
| Nearest City | Oshkosh (52 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-11T01:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3ec6e897d2ad0861561ee7468697ae86 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Portage, WI; Waupaca, WI; Marquette, WI |
| Headline | Severe Thunderstorm Warning issued June 10 at 8:55PM CDT until June 10 at 9:00PM CDT by NWS Green Bay WI |
| Expires | 2026-06-10T21:05:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3ec6e897d2ad0861561ee7468697ae86b1035c09.001.1","noaa_urn:oid:2.49.0.1.840.0.82f22eb0321e7b6e88c09c7eb996ccbef86fa556.001.1"] |
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 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.