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Severe Thunderstorm Warning for Allamakee, IA

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
Allamakee
Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Observed

What is happening

At 255 PM CDT, a severe thunderstorm was located near Harpers Ferry, or 7 miles south of Lansing, moving southeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Emergency management. At 255 PM CDT, Emergency management reported several trees down across Allamakee County. IMPACT...Expect damage...

What the bulletin says to do

For your protection move to an interior room on the lowest floor of a building.

Read official NWS bulletin

Full official description

Bulletin details

At 255 PM CDT, a severe thunderstorm was located near Harpers Ferry, or 7 miles south of Lansing, moving southeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Emergency management. At 255 PM CDT, Emergency management reported several trees down across Allamakee County. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Harpers Ferry around 300 PM CDT. Other locations impacted by this severe thunderstorm include County Roads A 52 And X 52, State Road 9 And County X 20, Waterville, State Road 76 And County X 16, Elon, Maud, and Red Barn Campground.

Lifecycle record

Official revisions

4 captured
  1. Update

    Severe Thunderstorm Warning issued September 4 at 2:57PM CDT until September 4 at 3:15PM CDT by NWS La Crosse WI

    Official revision
  2. Update

    Severe Thunderstorm Warning issued September 4 at 2:47PM CDT until September 4 at 3:15PM CDT by NWS La Crosse WI

    Official revision
  3. Update

    Severe Thunderstorm Warning issued September 4 at 2:40PM CDT until September 4 at 3:15PM CDT by NWS La Crosse WI

    Official revision
  4. Alert

    Severe Thunderstorm Warning issued September 4 at 2:30PM CDT until September 4 at 3:15PM 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