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 24 June 2026 at 19:30 UTC. It is kept here as a record.
It is the 4th strongest of the 20 detections recorded within 20 km of this point since 15 March 2026. 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 June 24 at 2:04PM CDT until June 24 at 2:30PM CDT by NWS La Crosse WI
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 | 0.64/1 |
| Coordinates | 45.1213, -90.3107 |
| Nearest City | Marshfield (51 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-24T19:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.628b011248926a03614770a51e5e1180 |
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: 2026-06-24T19:04:00.000Z.
First archived: 2026-06-24T19:11:06.314Z. 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 | Clark, WI; Taylor, WI |
| Headline | Severe Thunderstorm Warning issued June 24 at 2:04PM CDT until June 24 at 2:30PM CDT by NWS La Crosse WI |
| Expires | 2026-06-24T14:30:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.628b011248926a03614770a51e5e11803540292b.001.1","noaa_urn:oid:2.49.0.1.840.0.30a218f2c6eec79808074460a84769877542b213.001.1","noaa_urn:oid:2.49.0.1.840.0.eb2de4f4c006fd0e4e4c65307456e1f308cc4c10.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | Longwood |
| Iem County | Clark |
| Iem State | WI |
| Iem Wfo | ARX |
| MergedSources | [{"id":"iem_H_44.890_-90.600_1782326400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782326400000,"latitude":44.89,"longitude":-90.6}] |
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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