Storm Events Database

Event Details

Event Ice Storm
State IOWA
County/Area GRUNDY
WFO DMX
Report Source Trained Spotter
NCDC Data Source CSV
Begin Date 2007-12-11 01:00:00.0 CST-6
End Date 2007-12-11 13:00:00.0 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 75.00K
Crop Damage 0.00K
Episode Narrative A strong upper level weather feature moved into the southwest U.S. as upper level ridge took place over the southeast U.S. This placed Iowa in a strong southwest flow of air aloft. At the surface, a shallow layer of Arctic air was in place with surface high pressure located over the north central U.S. Deep moisture was drawn north into Iowa over the top of the Arctic Air at the surface with a deep layer of above freezing air flowing the top of the cold low level air. Precipitatable water values rose to more than 2 times the normal for mid December. A large area of freezing rain developed by the late evening hours over southern Iowa. The rain spread northeast rather rapidly over much of the southeast half of the state during the early morning hours. One quarter of an inch or more of ice accrual took place southeast of a Waterloo, Boone, to Atlantic line. Ice accumulated to at least one half inch southeast of a Tama, Dallas Center to the southeast corner of Cass County. The heaviest ice accumulations took place over south central Iowa from just south of Des Moines, southwest to Taylor County and east toward into Wapello and Davis Counties. Snow fell along the north edge of the freezing rain area. A band of 2 to 4 inch snow occurred over a large part of northern Iowa. Numerous trees and power lines were downed from about Interstate 80 south. Power outages were very numerous as well with Alliant Energy reporting 40,000 to 45,000 customers without power at one point, and MidAmerica Energy reporting nearly 30,000 out at one point. Tree damage was described as incredible by one observer in Monroe County at Albia. Damage was quite extensive over southern Iowa, especially from U.S. Highway 34 south, and up into Warren County. The Des Moines International Airport was closed for a 6 hour period as a plane slid off the tarmac in the icy conditions. No injuries were reported at the airport. The ice caused $200,000 damage to the Southern Iowa Electrical Cooperative. Due to the severity of the storm, Governor Chet Culver declared 23 southeast Iowa Counties disaster areas.
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 3.100M 0.00K
ADAMS (ZONE) ADAMS (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 100.00K 0.00K
MADISON (ZONE) MADISON (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 75.00K 0.00K
RINGGOLD (ZONE) RINGGOLD (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 100.00K 0.00K
GUTHRIE (ZONE) GUTHRIE (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 75.00K 0.00K
DECATUR (ZONE) DECATUR (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 150.00K 0.00K
TAYLOR (ZONE) TAYLOR (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 100.00K 0.00K
CASS (ZONE) CASS (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 75.00K 0.00K
ADAIR (ZONE) ADAIR (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 75.00K 0.00K
CLARKE (ZONE) CLARKE (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 150.00K 0.00K
LUCAS (ZONE) LUCAS (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 150.00K 0.00K
UNION (ZONE) UNION (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 100.00K 0.00K
WAYNE (ZONE) WAYNE (ZONE) IA 12/10/2007 22:00 CST-6 Ice Storm 0 0 150.00K 0.00K
MARION (ZONE) MARION (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 100.00K 0.00K
MAHASKA (ZONE) MAHASKA (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 100.00K 0.00K
DALLAS (ZONE) DALLAS (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 75.00K 0.00K
DAVIS (ZONE) DAVIS (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 150.00K 0.00K
BOONE (ZONE) BOONE (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 50.00K 0.00K
GREENE (ZONE) GREENE (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 50.00K 0.00K
JASPER (ZONE) JASPER (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 75.00K 0.00K
WARREN (ZONE) WARREN (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 100.00K 0.00K
POLK (ZONE) POLK (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 150.00K 0.00K
MONROE (ZONE) MONROE (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 100.00K 0.00K
WAPELLO (ZONE) WAPELLO (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 150.00K 0.00K
APPANOOSE (ZONE) APPANOOSE (ZONE) IA 12/11/2007 00:00 CST-6 Ice Storm 0 0 150.00K 0.00K
GRUNDY (ZONE) GRUNDY (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 75.00K 0.00K
MARSHALL (ZONE) MARSHALL (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 75.00K 0.00K
HAMILTON (ZONE) HAMILTON (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 50.00K 0.00K
STORY (ZONE) STORY (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 50.00K 0.00K
POWESHIEK (ZONE) POWESHIEK (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 100.00K 0.00K
BLACK HAWK (ZONE) BLACK HAWK (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 75.00K 0.00K
HARDIN (ZONE) HARDIN (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 50.00K 0.00K
TAMA (ZONE) TAMA (ZONE) IA 12/11/2007 01:00 CST-6 Ice Storm 0 0 75.00K 0.00K
Totals: 0 0 3.100M 0.00K