An intense low pressure area moved from northeast Nebraska, across southern Minnesota, into southern Wisconsin during the night of the 28th through the day on the 29th.  The dry low pushed over Iowa during the night and produced gusty southwest winds.  During the day, a tropospheric fold developed with the fold reaching down to 540 mb.  This helped to enhance wind speeds across the state.  High winds begin around sunrise with wind gusts of 69 MPH in the Rockwell City area of Calhoun County by 0740 CST.  In Carroll County, the Carroll Mesonet site recorded a 61 MPH wind gust by 0618 CST.  Other strong gusts included a 67 MPH wind gust in Dawson, a 61 MPH wind gust in Webster County, and a 60 MPH wind gust near Webster City in Hamilton County.  The winds in Hamilton County were accompanied by 2 inches of snow and a brief visibility restriction to about 500 feet.  Spotty reports of winds of 55 to 60 MPH were also received, such as a 58 MPH wind gust at Fontanelle in Adair County.  Sustained winds of 40 to 45 MPH were common across the high wind warning area through much of the morning into the mid afternoon hours.  Winds diminished by the mid to late afternoon hours.  Spotty reports of damage were received.  A canopy of a gas station was blown off in Calhoun County in Manson.  In addition, part of the roof of a school in Manson was ripped off.  Tree and power line damage was reported in Carroll and Guthrie Counties in the Coon Rapids area.

High Wind in HAMILTON, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 52.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Wind in CARROLL, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in GREENE, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 37.00 ES
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in BOONE, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 36.00 MS
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in STORY, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 36.00 MS
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in AUDUBON, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 36.00 MS
Property damage: 10.00K
Crop damage: 0.00K
Reported by: AWOS

High Wind in GUTHRIE, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 36.00 ES
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in DALLAS, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 59.00 MG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Wind in POLK, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 37.00 MS
Property damage: 50.00K
Crop damage: 0.00K
Reported by: ASOS

High Wind in CASS, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 36.00 MS
Property damage: 10.00K
Crop damage: 0.00K
Reported by: AWOS

High Wind in ADAIR, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in MADISON, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 36.00 ES
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in CALHOUN, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 60.00 MG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in WEBSTER, IOWA
From 29-FEB-12 06:00:00 to 29-FEB-12 16:00:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Mesonet