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 on January 21, and was followed by a rapid increase of northwest winds to a gusty 30 to 40 mph early on January 22. Visibility at times dipped to around a mile with falling and/or blowing snow, creating difficult travel conditions. Snowfall totals varied from around an inch or less toward Interstate 29, to 2 to 5 inches west of the James River.

Winter Weather in BRULE, SOUTH DAKOTA
From 21-JAN-18 07:00:00 to 22-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in AURORA, SOUTH DAKOTA
From 21-JAN-18 07:00:00 to 22-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in JERAULD, SOUTH DAKOTA
From 21-JAN-18 07:00:00 to 22-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in SANBORN, SOUTH DAKOTA
From 21-JAN-18 07:00:00 to 22-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in BEADLE, SOUTH DAKOTA
From 21-JAN-18 07:00:00 to 22-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in DAVISON, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in HANSON, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in MINER, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in LAKE, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in MCCOOK, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in BROOKINGS, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in MOODY, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.

Winter Weather in MINNEHAHA, SOUTH DAKOTA
From 21-JAN-18 22:00:00 to 22-JAN-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow developed early on January 21 and continued through early January 22 west of the James River, while snow did not develop until late on January 21 east of the James River. Winds increased overnight into the morning hours of the 22nd, gusting from 30 to 40 mph and creating areas of blowing snow along Interstate 90.  Peak winds on January 22 reached 31 mph at White Lake around 0700CST, 39 mph at Mitchell around 0800CST, 44 mph at Sioux Falls around 0800CST and 36 mph at Brookings around 1100CST. Snowfall totalled 5.0 inches at Wessington Springs, 4.1 inches at Chamberlain, 0.5 inch at Mitchell, 2.5 inches at Alexandria, 1.2 inches at Flandreau and 2.7 inches in Sioux Falls.