This alert expired on 12 August 2026 at 06:30 UTC. It is kept here as a record.
It is the 5th strongest of the 71 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 August 12 at 12:52AM CDT until August 12 at 1:30AM 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 63 · 2.0 km
- June 30, 2026 · score 43 · 16.7 km
- August 12, 2026 · score 39 · 16.8 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 80 % 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 | 80% |
| Coordinates | 44.5950, -89.5528 |
| Nearest City | Stevens Point (8 km) |
| Population Exposed | 117.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-12T05:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.744d3e49b49062b600a730aaa1e85c7e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Portage, WI; Wood, WI; Marathon, WI |
| Headline | Severe Thunderstorm Warning issued August 12 at 12:52AM CDT until August 12 at 1:30AM CDT by NWS Green Bay WI |
| Expires | 2026-08-12T01:30:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.744d3e49b49062b600a730aaa1e85c7edec3b3ca.001.1","noaa_urn:oid:2.49.0.1.840.0.a61e2b5fbc28ba0fdfb02982074a3c121462dc75.001.1"] |
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 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 Stevens Point?
Calamity.live data shows a weather event with CalamityScore 43/100, near Stevens Point (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.