Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 12 September 2026 at 02:45 UTC. It is kept here as a record.
It is the strongest of the 14 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 23 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 11 at 9:09PM CDT until September 11 at 9:45PM CDT by NWS Twin Cities/Chanhassen MN
An estimated 19,638 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 5, 2026 · score 34 · 13.3 km
- June 4, 2026 · score 34 · 15.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 40 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 40 / 100 |
| Our confidence | 86% |
| Coordinates | 45.3820, -95.4340 |
| Nearest City | Willmar (42 km) |
| Population Exposed | 19.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-12T02:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1c20fb0e504234fb2a6fb8e01f1c25afbd794e14.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kandiyohi, MN; Pope, MN; Swift, MN |
| Headline | Severe Thunderstorm Warning issued September 11 at 9:09PM CDT until September 11 at 9:45PM CDT by NWS Twin Cities/Chanhassen MN |
| Expires | 2026-09-11T21:45:00-05:00 |
| SenderName | NWS Twin Cities/Chanhassen MN |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | 7 S Alberta |
| Spc County | Stevens |
| Spc State | MN |
| Spc Comments | (MPX) |
| MergedSources | [{"id":"spc_tornado_45.46_-96.06_0","source":"spc","severity":"high","severityValue":78,"timestamp":1789174200000,"latitude":45.46,"longitude":-96.06},{"id":"spc_tornado_45.47_-96.08_1","source":"spc","severity":"high","severityValue":78,"timestamp":1789174260000,"latitude":45.47,"longitude":-96.08},{"id":"spc_wind_45.57_-96.17_32","source":"spc","severity":"medium","severityValue":45,"timestamp":1789173000000,"latitude":45.57,"longitude":-96.17},{"id":"spc_hail_45.76_-96.21_44","source":"spc","severity":"high","severityValue":65,"timestamp":1789179745141,"latitude":45.76,"longitude":-96.21},{"id":"spc_hail_45.57_-96.18_48","source":"spc","severity":"high","severityValue":65,"timestamp":1789173000000,"latitude":45.57,"longitude":-96.18},{"id":"spc_hail_45.49_-96.06_49","source":"spc","severity":"high","severityValue":65,"timestamp":1789173480000,"latitude":45.49,"longitude":-96.06},{"id":"spc_hail_45.47_-96.06_51","source":"spc","severity":"high","severityValue":65,"timestamp":1789173600000,"latitude":45.47,"longitude":-96.06},{"id":"spc_hail_45.43_-96.06_52","source":"spc","severity":"high","severityValue":65,"timestamp":1789174380000,"latitude":45.43,"longitude":-96.06},{"id":"spc_hail_45.47_-96.07_53","source":"spc","severity":"high","severityValue":65,"timestamp":1789174440000,"latitude":45.47,"longitude":-96.07},{"id":"spc_hail_45.47_-96.08_54","source":"spc","severity":"high","severityValue":65,"timestamp":1789176480000,"latitude":45.47,"longitude":-96.08},{"id":"spc_hail_45.47_-96.06_55","source":"spc","severity":"high","severityValue":65,"timestamp":1789176600000,"latitude":45.47,"longitude":-96.06}] |
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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