This alert expired on 30 June 2026 at 20:30 UTC. It is kept here as a record.
It is the 4th strongest of the 116 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 30 at 3:22PM CDT until June 30 at 3:30PM CDT by NWS Green Bay WI
An estimated 117,284 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 21, 2026 · score 67 · 10.1 km
- May 27, 2026 · score 43 · 11.0 km
- June 30, 2026 · score 39 · 11.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % 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) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 44.7967, -89.8350 |
| Nearest City | Wausau (24 km) |
| Population Exposed | 117.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-30T20:22:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2fb5b8d9402a7ae69fc6982e6c92cd141934d723.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Marathon, WI |
| Headline | Severe Thunderstorm Warning issued June 30 at 3:22PM CDT until June 30 at 3:30PM CDT by NWS Green Bay WI |
| Expires | 2026-06-30T15:30:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
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.
Want to know when something happens near Wausau?
Calamity.live data shows a weather event with CalamityScore 43/100, near Wausau (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.