Right now
The most recent data we hold from NOAA arrived 77 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 8 July 2026 at 20:23 UTC. It is kept here as a record.
It is the 2nd strongest of the 60 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 8 at 3:13PM CDT until July 8 at 3:15PM CDT by NWS Green Bay WI
Urban PEI: 117,503 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- June 24, 2026 · score 43 · 9.8 km
- June 10, 2026 · score 37 · 22.3 km
- June 16, 2026 · score 43 · 23.5 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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 44.4942, -88.8868 |
| Nearest City | Appleton (45 km) |
| Urban exposure index (PEI) | 117.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-08T20:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.bb6511dd86950abc6ceaea696ab6a996 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-08T20:13:00.000Z.
First archived: 2026-07-08T20:14:40.989Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Waupaca, WI; Outagamie, WI; Waupaca, WI; Waushara, WI; Winnebago, WI; Shawano, WI; Waupaca, WI |
| Headline | Severe Thunderstorm Warning issued July 8 at 3:13PM CDT until July 8 at 3:15PM CDT by NWS Green Bay WI |
| Expires | 2026-07-08T15:23:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bb6511dd86950abc6ceaea696ab6a99685bfac03.001.1","noaa_urn:oid:2.49.0.1.840.0.13387ee9c8385d2f327a92f2ada1227c210b83fe.001.1","noaa_urn:oid:2.49.0.1.840.0.be0662d75f9b3d0b95e2bc8944288d19d02b1df1.001.1"] |
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.
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