Right now
The most recent data we hold from NOAA arrived 7 hours 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 1 July 2026 at 13:00 UTC. It is kept here as a record.
It is the 17th strongest of the 73 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 24 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 7:17AM CDT until July 1 at 8:00AM CDT by NWS La Crosse WI
Urban PEI: 148,338 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- July 1, 2026 · score 43 · 11.3 km
- June 6, 2026 · score 43 · 12.0 km
- June 10, 2026 · score 37 · 19.9 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 43.9511, -91.5844 |
| Nearest City | Winona (12 km) |
| Urban exposure index (PEI) | 148.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-01T12:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.724a02170ced415744aa7469b9593101c5803d01.001.1 |
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: 2026-07-01T12:17:00.000Z.
First archived: 2026-07-01T12:50:48.218Z. 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 | Winona, MN |
| Headline | Severe Thunderstorm Warning issued July 1 at 7:17AM CDT until July 1 at 8:00AM CDT by NWS La Crosse WI |
| Expires | 2026-07-01T08:00:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | 5 WSW Cummingsville |
| Iem County | Fillmore |
| Iem State | MN |
| Iem Wfo | ARX |
| MergedSources | [{"id":"iem_H_43.840_-92.350_1782906660000","source":"iem","severity":"low","severityValue":25,"timestamp":1782906660000,"latitude":43.84,"longitude":-92.35},{"id":"iem_G_43.840_-92.350_1782906660000","source":"iem","severity":"low","severityValue":25,"timestamp":1782906660000,"latitude":43.84,"longitude":-92.35}] |
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.
Review the area, threshold and delivery channel in your account.
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