This alert expired on 1 July 2026 at 17:00 UTC. It is kept here as a record.
It is the 12th strongest of the 42 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 11:37AM CDT until July 1 at 12:00PM CDT by NWS Milwaukee/Sullivan WI
An estimated 16,564 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 24, 2026 · score 67 · 21.2 km
- June 6, 2026 · score 58 · 21.2 km
How we know
Confirmed by 4 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 43.7523, -89.1015 |
| Nearest City | Beaver Dam (39 km) |
| Population Exposed | 16.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-01T16:37:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.476998f3b2d7b1ed2d42cf861189b0188e33ef8c.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Green Lake, WI |
| Headline | Severe Thunderstorm Warning issued July 1 at 11:37AM CDT until July 1 at 12:00PM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-07-01T12:00:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 3 NE Lind Center |
| Iem County | Waupaca |
| Iem State | WI |
| Iem Wfo | GRB |
| Iem Remark | One tree down on Galilee Road. |
| MergedSources | [{"id":"iem_G_43.980_-88.560_1782909840000","source":"iem","severity":"low","severityValue":25,"timestamp":1782909840000,"latitude":43.98,"longitude":-88.56},{"id":"iem_D_44.010_-88.550_1782909900000","source":"iem","severity":"low","severityValue":25,"timestamp":1782909900000,"latitude":44.01,"longitude":-88.55},{"id":"iem_D_44.310_-88.990_1782907860000","source":"iem","severity":"low","severityValue":25,"timestamp":1782907860000,"latitude":44.31,"longitude":-88.99}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.