Right now
The most recent data we hold from NOAA arrived 2 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 21 July 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 21 recorded within 20 km of this point since 15 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 20 at 7:12PM CDT until July 20 at 8:00PM CDT by NWS Green Bay WI
Nearby, since 15 March 2026
- July 21, 2026 · score 46 · 17.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 60 % 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 | Critical |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 60% |
| Coordinates | 45.4633, -87.0894 |
| Nearest City | Marquette (122 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-21T00:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.770c65b355d826ee66dd2bcf289c39e8 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Door, WI; Delta, MI; Menominee, MI |
| Headline | Tornado Warning issued July 20 at 7:12PM CDT until July 20 at 8:00PM CDT by NWS Green Bay WI |
| Expires | 2026-07-20T20:00:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.770c65b355d826ee66dd2bcf289c39e8dc0caf3e.001.1","noaa_urn:oid:2.49.0.1.840.0.81d749925ed189630504b399a3c6cad3772f6d52.001.1"] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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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