An intense surface low pressure area moved from northeast Colorado to South Dakota from the 24th through the 26th. This storm first brought record breaking heavy rain along with heavy icing, which resulted in widespread tree and power line damage to the area. The rain and freezing rain then changed over to snow along and west of the Missouri River during the late afternoon and evening of the 25th. As the system continued moving northeast, snow moved east across the rest of the region through the morning hours of the 26th.
Many roads were closed and/or required a No Travel Advisory due to the snow and/or ice. One such road closure involved Interstate-90 from Wyoming to Chamberlain, SD on Sunday night, the 25th. Many motorists were stranded during the storm. A vehicle containing 4 adults, a child, and their dog became stuck in a ditch. The party waited overnight for a total of 12 hours in blizzard conditions before being rescued. During this time, the temperature fell from 38 degrees to 8 degrees in matter of minutes.
Snowfall amounts of 4 to 18 inches were reported along and west of the Missouri River, while generally 1 to 2 inches fell from east of the river to the Minnesota border. Some of the highest snowfall amounts include: 6 inches at Murdo and Mobridge, 8 inches at Pollock, 9 inches at Timber Lake, 13 inches 8 miles southwest of Keldron, 15 inches 6 miles southeast of McIntosh, 16 inches at McLaughlin, and 18 inches 14 miles northeast of Isabel. High wind gusts of 60 to 70 mph brought blizzard conditions to much of the region from the late afternoon on the 25th into the afternoon hours of the 26th. Specifically, winds gusted to 67 mph near Clear Lake and 70 mph at Pierre.

Blizzard in STANLEY, SOUTH DAKOTA
From 25-DEC-16 22:00:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Blizzard in JONES, SOUTH DAKOTA
From 25-DEC-16 22:00:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Blizzard in DAY, SOUTH DAKOTA
From 26-DEC-16 09:00:00 to 26-DEC-16 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blizzard in CLARK, SOUTH DAKOTA
From 26-DEC-16 11:00:00 to 26-DEC-16 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in CAMPBELL, SOUTH DAKOTA
From 26-DEC-16 03:00:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blizzard in WALWORTH, SOUTH DAKOTA
From 25-DEC-16 16:32:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in CODINGTON, SOUTH DAKOTA
From 26-DEC-16 04:30:00 to 26-DEC-16 12:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Blizzard in HAMLIN, SOUTH DAKOTA
From 26-DEC-16 06:30:00 to 26-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in POTTER, SOUTH DAKOTA
From 26-DEC-16 01:00:00 to 26-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blizzard in SULLY, SOUTH DAKOTA
From 25-DEC-16 22:00:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Blizzard in ROBERTS, SOUTH DAKOTA
From 26-DEC-16 05:30:00 to 26-DEC-16 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in GRANT, SOUTH DAKOTA
From 26-DEC-16 06:00:00 to 26-DEC-16 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blizzard in HUGHES, SOUTH DAKOTA
From 25-DEC-16 22:00:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Blizzard in MCPHERSON, SOUTH DAKOTA
From 26-DEC-16 07:00:00 to 26-DEC-16 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Blizzard in DEUEL, SOUTH DAKOTA
From 26-DEC-16 08:30:00 to 26-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in CORSON, SOUTH DAKOTA
From 25-DEC-16 16:00:00 to 26-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blizzard in DEWEY, SOUTH DAKOTA
From 25-DEC-16 15:35:00 to 26-DEC-16 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Blizzard in EDMUNDS, SOUTH DAKOTA
From 26-DEC-16 07:00:00 to 26-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in FAULK, SOUTH DAKOTA
From 26-DEC-16 08:11:00 to 26-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in BROWN, SOUTH DAKOTA
From 26-DEC-16 08:30:00 to 26-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blizzard in MARSHALL, SOUTH DAKOTA
From 26-DEC-16 09:00:00 to 26-DEC-16 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager