Right now
The most recent data we hold from NOAA arrived 35 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 1 July 2026 at 03:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 30 at 3:21PM CDT until June 30 at 10:00PM CDT by NWS La Crosse WI
Urban PEI: 16,788 within a heuristic 50 km radius; not unique people.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 46.0000, -94.3000 |
| Nearest City | Sartell (43 km) |
| Urban exposure index (PEI) | 16.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-30T20:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.531296e0a4ba03c1d51274437da6779a |
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: 2026-06-30T20:21:00.000Z.
First archived: 2026-06-30T23:40:24.897Z. 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 Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Dodge, MN; Olmsted, MN; Wabasha, MN; Winona, MN; Buffalo, WI; Clark, WI; Jackson, WI; Taylor, WI; Trempealeau, WI; Goodhue, MN; Chippewa, WI; Dunn, WI; Eau Claire, WI; Pepin, WI; Pierce, WI |
| Headline | Severe Thunderstorm Watch issued June 30 at 3:21PM CDT until June 30 at 10:00PM CDT by NWS La Crosse WI |
| Expires | 2026-06-30T22:00:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.531296e0a4ba03c1d51274437da6779a28388987.001.1","noaa_urn:oid:2.49.0.1.840.0.ff8530e9e7bf9d100fd21752f81993b94b93c480.001.1"] |
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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