A strong winter storm created numerous impacts across central and northeast South Dakota from late on December 27th until early on the 30th. Snowfall amounts ranged from 6 to as much of 20 inches. The heaviest precipitation came in two waves, with the first wave arriving during the late evening of December 27th and continuing into December 28th.  Behind this first wave of heavy snowfall, there was a period of light snow, drizzle, and freezing drizzle on Saturday the 28th for areas of northeast South Dakota.  The second wave of precipitation was all snow and arrived on the evening of December 28th and continued into December 30th.
The winter storm evolved into a blizzard across much of the region. The combination of the snow and blowing snow severely impacted road conditions and travel across the region. No Travel Advised was designated for most all state and county roads and even the closure of I-90 and I-29 in parts of South Dakota. Some accidents occurred along with several vehicles sliding into the ditch. Many events were postponed or cancelled along with many state office openings delayed on Monday, December 30th.
Some of the heaviest snowfall amounts include, 8 inches at Highmore, McLaughlin, and Onida; 9 inches at Castlewood, Doland, Sisseton, Mission Ridge, and Mobridge; 10 inches at Watertown, Ipswich, Aberdeen, and Eureka; 11 inches at Murdo and Milbank. Locations with a foot of more include, 12 inches at Roy Lake, Britton, Wilmot, and Clark; 13 inches at Summit; 14 inches at Bowdle; 15 inches at Seneca and Artas; 16 inches near Elm Lake; 17 inches at Roscoe; 18 inches near Herreid, and 20 inches at Clear Lake.  See the storm data entry for the blizzard.

Winter Storm in STANLEY, SOUTH DAKOTA
From 27-DEC-19 22:00:00 to 30-DEC-19 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in CAMPBELL, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 29-DEC-19 13:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in BROWN, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 29-DEC-19 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Winter Storm in GRANT, SOUTH DAKOTA
From 28-DEC-19 03:00:00 to 30-DEC-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in HUGHES, SOUTH DAKOTA
From 27-DEC-19 23:00:00 to 30-DEC-19 05:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in HYDE, SOUTH DAKOTA
From 27-DEC-19 23:00:00 to 29-DEC-19 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in SPINK, SOUTH DAKOTA
From 28-DEC-19 01:00:00 to 29-DEC-19 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Winter Storm in DEUEL, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 30-DEC-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in SULLY, SOUTH DAKOTA
From 28-DEC-19 00:00:00 to 29-DEC-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in HAND, SOUTH DAKOTA
From 28-DEC-19 00:00:00 to 29-DEC-19 12:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in DAY, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 29-DEC-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in MARSHALL, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 29-DEC-19 12:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in DEWEY, SOUTH DAKOTA
From 28-DEC-19 00:00:00 to 30-DEC-19 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in POTTER, SOUTH DAKOTA
From 28-DEC-19 00:00:00 to 29-DEC-19 12:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in FAULK, SOUTH DAKOTA
From 28-DEC-19 01:00:00 to 29-DEC-19 12:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in CLARK, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 29-DEC-19 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in CORSON, SOUTH DAKOTA
From 28-DEC-19 00:00:00 to 30-DEC-19 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in WALWORTH, SOUTH DAKOTA
From 28-DEC-19 01:00:00 to 29-DEC-19 12:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in EDMUNDS, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 29-DEC-19 12:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in CODINGTON, SOUTH DAKOTA
From 28-DEC-19 03:00:00 to 30-DEC-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in JONES, SOUTH DAKOTA
From 27-DEC-19 22:00:00 to 30-DEC-19 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in MCPHERSON, SOUTH DAKOTA
From 28-DEC-19 03:00:00 to 29-DEC-19 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in HAMLIN, SOUTH DAKOTA
From 28-DEC-19 02:00:00 to 30-DEC-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in ROBERTS, SOUTH DAKOTA
From 28-DEC-19 04:00:00 to 30-DEC-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer