Storm Events Database

Event Details

Event High Wind
Magnitude 35 kts.
State IOWA
County/Area GRUNDY
WFO DMX
Report Source Official NWS Observations
NCDC Data Source CSV
Begin Date 2008-10-26 09:30:00.0 CST-6
End Date 2008-10-26 16:30:00.0 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 25.00K
Crop Damage 25.00K
Episode Narrative The seasons first strong push of cold air moved south into the central U.S. on the 26th. A very strong upper level trough of low pressure aloft dropped south out of Saskatchewan accompanied by a strong upper level jet stream and a tropospheric fold. As the cold air moved in, the atmosphere became adiabatic, creating a mixed layer, up to the 700 mb to 600 mb level. The mixed layer contained very strong winds of 60 to 70 kts. The downward momentum in the subsidence area behind a cold front that moved south across the area produced high winds over a large part of the state. Most areas reported sustained winds of 40 to 45 MPH for several hours, with many areas reporting gusts of 60 to 65 MPH. The highest gust was recorded in Polk County in West Des Moines with a gust of 69 MPH. Some of the other higher gusts occurred in north central Iowa with a 68 MPH wind gust in Cerro Gordo County at Ventura, and in Polk County in Windsor Heights. Scattered damage was reported around the state with numerous tree branches broken and some trees blown over. Power was knocked out in several locations. In the Des Moines metropolitan area, about 17,000 homes were without power at the height of the storm. Power was out for 3 to 6 hours in most cases. Thousands of homes were without power for brief periods of time during the wind event. In Black Hawk County, at Dunkerton, the high winds caused severe damage to a nearly completed new COOP with damage estimated over a million dollars. The new COOP was under construction following the damage earlier in the spring as a tornado destroyed the old one. There was some crop damage as well as the high winds caused lodging of some of the corn around the state as the harvest was not yet complete. During the afternoon of the 26th, the high winds caused some travel problems as it was difficult to maintain control due to cross winds. The mile long bridge across the Saylorville Reservoir near Polk City, in Polk County, was closed for several hours due to the high winds for safety reasons.
Event Narrative


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 2.425M 1.100M
BREMER (ZONE) BREMER (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
STORY (ZONE) STORY (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 50 kts. MG 0 0 50.00K 25.00K
GREENE (ZONE) GREENE (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
AUDUBON (ZONE) AUDUBON (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
GUTHRIE (ZONE) GUTHRIE (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
CRAWFORD (ZONE) CRAWFORD (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 51 kts. MG 0 0 25.00K 25.00K
CARROLL (ZONE) CARROLL (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 51 kts. MG 0 0 25.00K 25.00K
HANCOCK (ZONE) HANCOCK (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
KOSSUTH (ZONE) KOSSUTH (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 50.00K
HUMBOLDT (ZONE) HUMBOLDT (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
POCAHONTAS (ZONE) POCAHONTAS (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
PALO ALTO (ZONE) PALO ALTO (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
CALHOUN (ZONE) CALHOUN (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 50 kts. MG 0 0 25.00K 25.00K
WRIGHT (ZONE) WRIGHT (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 50 kts. MG 0 0 25.00K 25.00K
EMMET (ZONE) EMMET (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 52 kts. MG 0 0 25.00K 25.00K
SAC (ZONE) SAC (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 52 kts. EG 0 0 25.00K 25.00K
BUTLER (ZONE) BUTLER (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
GRUNDY (ZONE) GRUNDY (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
BOONE (ZONE) BOONE (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 51 kts. MG 0 0 25.00K 25.00K
HARDIN (ZONE) HARDIN (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 52 kts. MG 0 0 25.00K 25.00K
FRANKLIN (ZONE) FRANKLIN (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 52 kts. MG 0 0 25.00K 25.00K
WEBSTER (ZONE) WEBSTER (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
WORTH (ZONE) WORTH (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 50 kts. MG 0 0 25.00K 25.00K
CERRO GORDO (ZONE) CERRO GORDO (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 59 kts. MG 0 0 50.00K 25.00K
WINNEBAGO (ZONE) WINNEBAGO (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 54 kts. EG 0 0 25.00K 25.00K
HAMILTON (ZONE) HAMILTON (ZONE) IA 10/26/2008 09:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
MADISON (ZONE) MADISON (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
WARREN (ZONE) WARREN (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
CASS (ZONE) CASS (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
ADAIR (ZONE) ADAIR (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 50 kts. MG 0 0 25.00K 25.00K
ADAIR (ZONE) ADAIR (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 52 kts. MG 0 0 25.00K 25.00K
MARION (ZONE) MARION (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 50 kts. MG 0 0 25.00K 25.00K
POLK (ZONE) POLK (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 60 kts. MG 0 0 100.00K 25.00K
BLACK HAWK (ZONE) BLACK HAWK (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 51 kts. MG 0 0 1.250M 25.00K
JASPER (ZONE) JASPER (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
MARSHALL (ZONE) MARSHALL (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 54 kts. MG 0 0 25.00K 25.00K
TAMA (ZONE) TAMA (ZONE) IA 10/26/2008 10:30 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
UNION (ZONE) UNION (ZONE) IA 10/26/2008 11:00 CST-6 High Wind 51 kts. MG 0 0 25.00K 25.00K
CLARKE (ZONE) CLARKE (ZONE) IA 10/26/2008 11:00 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
MAHASKA (ZONE) MAHASKA (ZONE) IA 10/26/2008 11:00 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
MONROE (ZONE) MONROE (ZONE) IA 10/26/2008 11:00 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
POWESHIEK (ZONE) POWESHIEK (ZONE) IA 10/26/2008 11:00 CST-6 High Wind 52 kts. EG 0 0 25.00K 25.00K
LUCAS (ZONE) LUCAS (ZONE) IA 10/26/2008 11:00 CST-6 High Wind 35 kts. ES 0 0 25.00K 25.00K
Totals: 0 0 2.425M 1.100M