Right now
The most recent data we hold from NOAA arrived 5 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 7 July 2026 at 03:45 UTC. It is kept here as a record.
It is the 9th strongest of the 21 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 5 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 6 at 9:59PM CDT until July 6 at 10:45PM CDT by NWS Aberdeen SD
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.66/1 |
| Coordinates | 45.8376, -95.6435 |
| Nearest City | Willmar (93 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-07T02:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.189e7a6810220b13ae9a8f1e8bc292c6 |
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: 2026-07-07T02:59:00.000Z.
First archived: 2026-07-07T03:03:01.562Z. 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 | Big Stone, MN; Traverse, MN; Grant, SD; Roberts, SD; Grant, MN; Otter Tail, MN; Big Stone, MN; Traverse, MN and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 6 at 9:59PM CDT until July 6 at 10:45PM CDT by NWS Aberdeen SD |
| Expires | 2026-07-06T22:45:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.189e7a6810220b13ae9a8f1e8bc292c611538e7b.001.1","noaa_urn:oid:2.49.0.1.840.0.d8c3b42c2ffb5b894871a7ce9af10a1bd3e1f721.001.1","noaa_urn:oid:2.49.0.1.840.0.d6deea67359236082bab4ed371c50a80489cf241.002.1","noaa_urn:oid:2.49.0.1.840.0.e934cf7ab5fce255bf43bf0cc94bac5b9ce3970f.001.1"] |
| Iem TypeSummary | T |
| Iem City | 3 NNW Norcross |
| Iem County | Grant |
| Iem State | MN |
| Iem Wfo | FGF |
| Iem Remark | Chaser near Herman MN reported cone tornado northwest of his position. On the ground for around 2 minutes then lifted. |
| MergedSources | [{"id":"iem_T_45.910_-96.220_1783390560000","source":"iem","severity":"low","severityValue":25,"timestamp":1783390560000,"latitude":45.91,"longitude":-96.22}] |
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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