This alert expired on 21 July 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 79 recorded within 20 km of this point since 15 March 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 20 at 7:46PM CDT until July 20 at 8:15PM CDT by NWS La Crosse WI
An estimated 117,284 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 27, 2026 · score 43 · 0.9 km
- June 30, 2026 · score 43 · 10.1 km
- May 27, 2026 · score 43 · 11.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 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 | Critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 44.7061, -89.8271 |
| Nearest City | Marshfield (27 km) |
| Population Exposed | 117.3K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-07-21T00:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.97e2e72b68365553b0572783ed2ca4a3 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jackson, WI; Langlade, WI; Menominee, WI; Shawano, WI; Marathon, WI |
| Headline | Tornado Warning issued July 20 at 7:46PM CDT until July 20 at 8:15PM CDT by NWS La Crosse WI |
| Expires | 2026-07-20T20:15:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.97e2e72b68365553b0572783ed2ca4a3ca7d351d.001.1","noaa_urn:oid:2.49.0.1.840.0.65b873167fe359332d84714b18e588681a25e60e.001.1","noaa_urn:oid:2.49.0.1.840.0.1591bf438442d4ac2e376a53bd3707b3dc5ffe92.001.1","noaa_urn:oid:2.49.0.1.840.0.3babe396eb6fb709ff5b8350ae10fc878ee83f6d.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.
Want to know when something happens near Marshfield?
Calamity.live data shows a weather event with CalamityScore 67/100, near Marshfield (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.