Right now
The most recent data we hold from NOAA arrived 39 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 1 July 2026 at 15:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 46 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 9:22AM CDT until July 1 at 10:00AM CDT by NWS La Crosse WI
Urban PEI: 121,244 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 24, 2026 · score 67 · 12.4 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 | 43.5175, -91.0925 |
| Nearest City | La Crosse (34 km) |
| Urban exposure index (PEI) | 121.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-01T14:22:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.08299c4ff831324d7a8adfbbcdf342fb7b389b9c.002.1 |
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: 2026-07-01T14:22:00.000Z.
First archived: 2026-07-01T14:27:07.398Z. 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 | Crawford, WI; Vernon, WI |
| Headline | Severe Thunderstorm Warning issued July 1 at 9:22AM CDT until July 1 at 10:00AM CDT by NWS La Crosse WI |
| Expires | 2026-07-01T10:00:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 5 NNW Readstown |
| Iem County | Vernon |
| Iem State | WI |
| Iem Wfo | ARX |
| Iem Remark | Tree fell onto a house. Roof started to leaking letting water into the house. |
| MergedSources | [{"id":"iem_D_43.560_-90.770_1782899040000","source":"iem","severity":"low","severityValue":25,"timestamp":1782899040000,"latitude":43.56,"longitude":-90.77},{"id":"iem_D_43.510_-90.800_1782898860000","source":"iem","severity":"low","severityValue":25,"timestamp":1782898860000,"latitude":43.51,"longitude":-90.8}] |
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.
Want to know when something happens in this area?