An intense low pressure system moved into southern California during the afternoon and evening of the 7th, then tracked northeast across the central U.S.  the surface low reached Kansas during the morning of the 8th, eastern Kansas by evening, and tracked to northern Illinois before sunrise on the 8th.  The storm intensified rapidly, reaching 975 mb by the afternoon of the 9th as it crossed Lower Michigan.  Snow broke out across Iowa during the overnight hours of the 7th into the early morning hours of the 8th.  The snow continued through the day on the 8th.  Northeast winds of 15 to 25 MPH caused drifting snow through the day and into the evening.  Snowfall reached an inch per hour at times during several heavier waves of snowfall during the afternoon and evening of the 8th.  A broad band of 8 to 16 inch snowfall totals were reported across much of the northwest two thirds of the state.  There were isolated reports of thundersnow over southwest into central Iowa.  Some of the heavier snowfall totals included 20 inches in Sac County at Schaller, 16.2 inches in Adams County at Corning, 16 inches in Cass County at Atlantic, 15.7 inches at the Des Moines Airport, and 15.3 inches in Windsor Heights, both in Polk County.  The entire CWA received at least 4-6 inches from the storm over a 36 hour period.  In terms of snowfall across the state, this storm produced the greatest snowfall /10.2 inches average/ of any storm since 1971.  The snow became mixed with freezing rain and ice pellets over the southeast third of the state, and even turned to all freezing rain for a few hours southeast of a Lamoni to Ottumwa line.  Ice accrual was generally under one tenth of an inch.  Road conditions became hazardous with most businesses and schools closing by the early to mid afternoon hours of the 8th due to the poor conditions.

Heavy Snow in WEBSTER, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in CALHOUN, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in SAC, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in GREENE, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in POCAHONTAS, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in CARROLL, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in CRAWFORD, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in HUMBOLDT, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in HANCOCK, IOWA
From 08-DEC-09 04:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WINNEBAGO, IOWA
From 08-DEC-09 04:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in POLK, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WAYNE, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in LUCAS, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in TAMA, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Unknown

Heavy Snow in BREMER, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in DALLAS, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in DECATUR, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in CERRO GORDO, IOWA
From 08-DEC-09 04:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in BUTLER, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in CLARKE, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in POWESHIEK, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Unknown

Heavy Snow in MARION, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in GUTHRIE, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WORTH, IOWA
From 08-DEC-09 04:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in MADISON, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WARREN, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in BOONE, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in RINGGOLD, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in FRANKLIN, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in AUDUBON, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in HARDIN, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in CASS, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in KOSSUTH, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Unknown

Heavy Snow in ADAMS, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WRIGHT, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in JASPER, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in MARSHALL, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in GRUNDY, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in ADAIR, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in TAYLOR, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in UNION, IOWA
From 07-DEC-09 23:00:00 to 09-DEC-09 04:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in STORY, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in HAMILTON, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in BLACK HAWK, IOWA
From 08-DEC-09 02:00:00 to 09-DEC-09 06:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter