Right now
The most recent data we hold from NOAA arrived 7 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.
No stronger detection stands among the 33 recorded within 20 km of this point since 16 March 2026 — 4 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 9:30AM CDT until July 1 at 10:00AM CDT by NWS La Crosse WI
An estimated 121,244 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 11, 2026 · score 37 · 16.2 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 91% |
| Coordinates | 43.6000, -90.8333 |
| Nearest City | La Crosse (40 km) |
| Population Exposed | 121.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-01T14:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ec1face1131d62033842d04b3f63d4d32a55c45e.001.1 |
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 9:30AM 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.
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