This alert expired on 1 July 2026 at 13:15 UTC. It is kept here as a record.
It is the 7th strongest of the 86 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 July 1 at 7:47AM CDT until July 1 at 8:15AM CDT by NWS Green Bay WI
An estimated 242,845 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 27, 2026 · score 67 · 10.0 km
- July 2, 2026 · score 43 · 17.1 km
- July 2, 2026 · score 43 · 17.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 86 % 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 | 86% |
| Coordinates | 44.0905, -88.4830 |
| Nearest City | Oshkosh (9 km) |
| Population Exposed | 242.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-01T12:47:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3b0bcddc3e48b9ba4529cdb36dbb4c12 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Calumet, WI; Winnebago, WI; Calumet, WI; Outagamie, WI; Winnebago, WI |
| Headline | Severe Thunderstorm Warning issued July 1 at 7:47AM CDT until July 1 at 8:15AM CDT by NWS Green Bay WI |
| Expires | 2026-07-01T08:15:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3b0bcddc3e48b9ba4529cdb36dbb4c12c1a1c732.001.1","noaa_urn:oid:2.49.0.1.840.0.fcb2469ca833d45022b4add4c6ef17f385c1a514.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 48 |
| Iem Unit | MPH |
| Iem City | 2 SSW Wautoma |
| Iem County | Waushara |
| Iem State | WI |
| Iem Wfo | GRB |
| MergedSources | [{"id":"iem_G_44.040_-89.310_1782905760000","source":"iem","severity":"low","severityValue":25,"timestamp":1782905760000,"latitude":44.04,"longitude":-89.31}] |
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 Oshkosh?
Calamity.live data shows a weather event with CalamityScore 43/100, near Oshkosh (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.