Snow accumulated 5 to 8 inches in northwest Iowa near the northern border of the state, with lesser snow accumulations to the south. The snow fell during the day and nighttime hours of December 16th, continuing into the morning of December 17th. Generally light winds at the start of the snowfall increased to northerly at 15 to 20 mph sustained with gusts of 25 to 30 mph during the night. The winds and falling temperatures caused wind chills to drop to dangerous levels of the teens to 20 below zero while snow was falling. The winds also caused drifting snow and areas of blowing snow.

Winter Storm in LYON, IOWA
From 16-DEC-16 11:00:00 to 17-DEC-16 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snow accumulated 4 to 8 inches, including 7.3 inches near Rock Rapids. Northerly winds increased to near 20 mph sustained with gusts near 30 mph, causing drifting snow and areas of blowing snow. The winds and falling temperatures caused wind chills to drop to near 20 below zero during the storm. Some schools were dismissed early on December 16th.

Winter Storm in OSCEOLA, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow accumulated 4 to 7 inches, including 5.8 inches near Sibley. Northerly winds increased to near 20 mph sustained with gusts near 30 mph, causing drifting snow and areas of blowing snow. The winds and falling temperatures caused wind chills to drop to near 20 below zero during the storm. Some schools were dismissed early on December 16th.

Winter Storm in DICKINSON, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Snow accumulated 4 to 7 inches, including 6.5 inches near Lake Park. Northerly winds increased to near 20 mph sustained with gusts near 30 mph, causing drifting snow and areas of blowing snow. The winds and falling temperatures caused wind chills to drop to near 20 below zero during the storm. Some schools were dismissed early on December 16th.

Winter Storm in CLAY, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow accumulated 4 to 7 inches, including 6.0 inches near Everly. Northerly winds increased to near 20 mph sustained with gusts near 30 mph, causing drifting snow and areas of blowing snow. The winds and falling temperatures caused wind chills to drop to near 20 below zero during the storm. Some schools were dismissed early on December 16th.

Winter Storm in SIOUX, IOWA
From 16-DEC-16 11:00:00 to 17-DEC-16 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow accumulated 4 to 6 inches, including 6.0 inches at Rock Valley. Northerly winds increased to near 20 mph sustained with gusts near 30 mph, causing drifting snow and areas of blowing snow. The winds and falling temperatures caused wind chills to drop to near 20 below zero during the storm. Some schools were dismissed early on December 16th.

Winter Weather in BUENA VISTA, IOWA
From 16-DEC-16 13:00:00 to 17-DEC-16 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Snow accumulated 1 to 3 inches. Northerly winds increased to 15 to 20 mph sustained with gusts of 25 to 30 mph, causing some minor drifting snow. The winds and falling temperatures caused wind chills to drop into the teens below zero.

Winter Weather in WOODBURY, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snow accumulated 1 to 3 inches, including 3.0 inches near Sioux City. Northerly winds increased to 15 to 20 mph sustained with gusts of 25 to 30 mph, causing some minor drifting snow. The winds and falling temperatures caused wind chills to drop into the teens below zero.

Winter Weather in IDA, IOWA
From 16-DEC-16 13:00:00 to 17-DEC-16 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow accumulated 1 to 3 inches, including 2.0 inches at Holstein. Northerly winds increased to 15 to 20 mph sustained with gusts of 25 to 30 mph, causing some minor drifting snow. The winds and falling temperatures caused wind chills to drop into the teens below zero.

Winter Storm in O'BRIEN, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow accumulated 4 to 7 inches, including 6.5 inches at Sanborn. Northerly winds increased to near 20 mph sustained with gusts near 30 mph, causing drifting snow and areas of blowing snow. The winds and falling temperatures caused wind chills to drop to near 20 below zero during the storm. Some schools were dismissed early on December 16th.

Winter Weather in PLYMOUTH, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snow accumulated 2 to 4 inches, including 3.0 inches near Akron. Northerly winds increased to 15 to 20 mph sustained with gusts of 25 to 30 mph, causing some drifting snow. The winds and falling temperatures caused wind chills to drop into the teens below zero.

Winter Weather in CHEROKEE, IOWA
From 16-DEC-16 12:00:00 to 17-DEC-16 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Snow accumulated 2 to 4 inches. Northerly winds increased to 15 to 20 mph sustained with gusts of 25 to 30 mph, causing some drifting snow. The winds and falling temperatures caused wind chills to drop into the teens below zero.