Storm Events Database

Event Details

Event Heavy Snow
State IOWA
County/Area GRUNDY
WFO DMX
Begin Date 01/13/2009 19:00:00 CST-6
End Date 01/14/2009 08:00:00 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative A strong thermal contrast was in place across the central U.S. with Arctic high pressure to the northwest and developing low pressure to the west of Iowa. The low pressure was an Alberta Clipper type system that advanced southeast through South Dakota, across southwest Iowa by around midnight, and into west central Illinois by daybreak on the 14th. A band of snow developed in the strong warm air advection zone northeast of the low pressure track. Temperatures in this area were in the single digits and the snow fell with snow ratios in the 15:1 to 20:1 range. During the height of the event, snow fell at the rate of nearly one inch per hour. For the most part snowfall was in the 3 to 5 inch range across the northeast half of Iowa. There were a few areas of heavier snow, mainly in the Waterloo area, and also in the northern tier of counties between Mason City and Algona. In the latter area, spotty 6 inch snowfall amounts were received from Winnebago and Kossuth Counties. An area of 6 to 8 inch snowfall occurred in the Waterloo area. Some of the heavier reports included 8.5 inches in Butler County at Parkersburg and also in Cedar Falls in Black Hawk County, 8 inches in Black Hawk County at Dunkerton and 7.5 inches at La Porte City. Seven and one half inches was also reported in Bremer County at Waverly. Roads became slippery with numerous accidents reported, however no road closures occurred. With the snow being of such light consistency, it was fortunate that wind speeds were generally under 20 MPH during the event, resulting in drifting and patchy blowing snow.
Event Narrative


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 0.00K 0.00K
KOSSUTH (ZONE) KOSSUTH (ZONE) IA 01/13/2009 19:00 CST-6 Heavy Snow 0 0 0.00K 0.00K
GRUNDY (ZONE) GRUNDY (ZONE) IA 01/13/2009 19:00 CST-6 Heavy Snow 0 0 0.00K 0.00K
BLACK HAWK (ZONE) BLACK HAWK (ZONE) IA 01/13/2009 19:00 CST-6 Heavy Snow 0 0 0.00K 0.00K
WINNEBAGO (ZONE) WINNEBAGO (ZONE) IA 01/13/2009 19:00 CST-6 Heavy Snow 0 0 0.00K 0.00K
BREMER (ZONE) BREMER (ZONE) IA 01/13/2009 19:00 CST-6 Heavy Snow 0 0 0.00K 0.00K
BUTLER (ZONE) BUTLER (ZONE) IA 01/13/2009 19:00 CST-6 Heavy Snow 0 0 0.00K 0.00K
Totals: 0 0 0.00K 0.00K