A strong mid-level trough pushed across the Rockies on January 21, and developed into a closed cyclone across the central Plains. As low pressure deepened moving from Kansas to the Great Lakes on January 22, precipitation wrapped back into a tight deformation zone on the northwest flank of the storm. Snow developed later on January 21, and was followed by a rapid increase of northwest winds to a gusty 30 to 45 mph early on January 22. Widespread visibility of a mile or less at time occurred with falling snow, heavy at times, which continued into early afternoon. Snowfall totaled to 3 to 7 inches.

Winter Storm in GREGORY, SOUTH DAKOTA
From 21-JAN-18 06:00:00 to 22-JAN-18 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow, heavy at times, developed early on January 21, with an increase in wind to a gusty 30 to 40 mph by early on January 22 producing areas of blowing snow.  Travel become quite challenging with visibilities often at a mile or less through the morning of January 22. Total snowfall tallied generally 4 to 7 inches, but measured as high as 8.5 inches 2 miles northeast of Burke.

Winter Storm in CHARLES MIX, SOUTH DAKOTA
From 21-JAN-18 06:00:00 to 22-JAN-18 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow, heavy at times, developed early on January 21, with an increase in wind to a gusty 30 to 40 mph by early on January 22 producing areas of blowing snow.  Travel become quite challenging with visibilities often at a mile or less through the morning of January 22. Total snowfall tallied generally 4 to 7 inches, but measured as high as 8.5 inches 2 miles northeast of Burke.

Winter Storm in DOUGLAS, SOUTH DAKOTA
From 21-JAN-18 06:00:00 to 22-JAN-18 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow, heavy at times, developed early on January 21, with an increase in wind to a gusty 30 to 40 mph by early on January 22 producing areas of blowing snow.  Travel become quite challenging with visibilities often at a mile or less through the morning of January 22. Total snowfall tallied generally 4 to 7 inches, but measured as high as 8.5 inches 2 miles northeast of Burke.

Winter Storm in BON HOMME, SOUTH DAKOTA
From 22-JAN-18 00:00:00 to 22-JAN-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow, heavy at times, developed late on January 21, with an increase in wind to a gusty 30 to 40 mph by early on January 22 producing areas of blowing snow.  Travel become quite challenging with visibilities often at a mile or less through the morning of January 22. Total snowfall tallied generally 4 to 7 inches, with higher reports of 5.7 inches at Tyndall and 4.0 inches at Menno and near Hurley.

Winter Storm in HUTCHINSON, SOUTH DAKOTA
From 22-JAN-18 00:00:00 to 22-JAN-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow, heavy at times, developed late on January 21, with an increase in wind to a gusty 30 to 40 mph by early on January 22 producing areas of blowing snow.  Travel become quite challenging with visibilities often at a mile or less through the morning of January 22. Total snowfall tallied generally 4 to 7 inches, with higher reports of 5.7 inches at Tyndall and 4.0 inches at Menno and near Hurley.

Winter Storm in TURNER, SOUTH DAKOTA
From 22-JAN-18 00:00:00 to 22-JAN-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snow, heavy at times, developed late on January 21, with an increase in wind to a gusty 30 to 40 mph by early on January 22 producing areas of blowing snow.  Travel become quite challenging with visibilities often at a mile or less through the morning of January 22. Total snowfall tallied generally 4 to 7 inches, with higher reports of 5.7 inches at Tyndall and 4.0 inches at Menno and near Hurley.