This alert expired on 4 July 2026 at 21:51 UTC. It is kept here as a record.
No stronger detection stands among the 27 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. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 4 at 4:41PM CDT until July 4 at 4:45PM CDT by NWS Twin Cities/Chanhassen MN
An estimated 16,788 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 23, 2026 · score 22 · 21.9 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 87 % 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) | 58 / 100 |
| Our confidence | 87% |
| Coordinates | 45.6500, -94.8140 |
| Nearest City | Sartell (47 km) |
| Population Exposed | 16.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T21:41:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ff96559549db6e031e9696c2a5fe65029eb58b57.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Stearns, MN |
| Headline | Tornado Warning issued July 4 at 4:41PM CDT until July 4 at 4:45PM CDT by NWS Twin Cities/Chanhassen MN |
| Expires | 2026-07-04T16:51:00-05:00 |
| SenderName | NWS Twin Cities/Chanhassen MN |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Clarissa |
| Iem County | Todd |
| Iem State | MN |
| Iem Wfo | MPX |
| MergedSources | [{"id":"iem_H_45.810_-94.960_1783197000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783197000000,"latitude":45.81,"longitude":-94.96},{"id":"iem_D_45.950_-95.000_1783197480000","source":"iem","severity":"low","severityValue":25,"timestamp":1783197480000,"latitude":45.95,"longitude":-95},{"id":"iem_D_46.130_-94.950_1783195500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783195500000,"latitude":46.13,"longitude":-94.95},{"id":"iem_H_45.740_-94.960_1783198620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198620000,"latitude":45.74,"longitude":-94.96},{"id":"iem_H_46.010_-94.870_1783197300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783197300000,"latitude":46.01,"longitude":-94.87},{"id":"iem_H_46.130_-94.950_1783195500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783195500000,"latitude":46.13,"longitude":-94.95}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.