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Ended official alertUpdated

Severe Thunderstorm Warning for Clayton, IA; Grant, WI

This alert has ended.Kept for recent context. Do not use it as a current warning.

Official alert fields

What you need to know

Applies to
Clayton, Grant
Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Observed

What is happening

At 455 PM CDT, a severe thunderstorm was located near Garnavillo, or 9 miles southwest of Prairie Du Chien, moving southeast at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe thunderstorm will remain over mainly rural...

What the bulletin says to do

For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.

Read official NWS bulletin

Full official description

Bulletin details

At 455 PM CDT, a severe thunderstorm was located near Garnavillo, or 9 miles southwest of Prairie Du Chien, moving southeast at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe thunderstorm will remain over mainly rural areas of north central Clayton and west central Grant Counties, including the following locations... Wyalusing State Park, National, Jellystone Park Near Bagley, Patch Grove, Pikes Peak State Park, Clayton, and Bagley.

Lifecycle record

Official revisions

4 captured
  1. Update

    Severe Thunderstorm Warning issued September 4 at 4:55PM CDT until September 4 at 5:15PM CDT by NWS La Crosse WI

    Official revision
  2. Update

    Severe Thunderstorm Warning issued September 4 at 4:46PM CDT until September 4 at 5:15PM CDT by NWS La Crosse WI

    Official revision
  3. Update

    Severe Thunderstorm Warning issued September 4 at 4:41PM CDT until September 4 at 5:15PM CDT by NWS La Crosse WI

    Official revision
  4. Alert

    Severe Thunderstorm Warning issued September 4 at 4:31PM CDT until September 4 at 5:15PM CDT by NWS La Crosse WI

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS La Crosse WI. This page reorganizes official fields and does not add a forecast or expand the affected area.

CAP status
Actual
Message type
Update
Last collected
Methodology and corrections