During the morning of March 10, an approaching weak mid-level wave brought a brief pulse of warm advection. With cold temperatures at the surface and warmer temperatures aloft, a mix of precipitation types occurred during the morning and midday hours before changing over to light snow.  While most snowfall was less than an inch, a narrow band of one to four inches occurred from near De Smet to Chester and Flandreau.

Winter Weather in SANBORN, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Freezing rain produced ice accumulations of one to two tenths of an inch.

Winter Weather in MINER, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Freezing rain produced ice accumulations up to two tenths of an inch around Howard. Precipitation ended as snow, with a half inch or less accumulation.

Winter Weather in LAKE, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Freezing rain produced ice accumulations up to a tenths of an inch around Madison.  Precipitation changed over to snow in the afternoon and evening with amounts generally two inches or less including an inch around Madison, but amounts reached as high as 3.8 inches 2 miles north of Chester.

Winter Weather in MOODY, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Freezing rain during the morning and midday hours produced ice accumulations up to a tenth of an inch around Flandreau.  Precipitation changed to snow with amounts up to 3.1 inches at Flandreau.

Winter Weather in MINNEHAHA, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Freezing rain produced ice accumulations up to a tenths of an inch around Sioux Falls.  Precipitation ended as light snow, with an accumulation mainly a half inch or less.

Winter Weather in MCCOOK, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Freezing rain produced ice accumulations up to a tenth of an inch in the morning. Precipitation ended as snowfall, with accumulations mainly less than an inch.

Winter Weather in TURNER, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light freezing rain produced ice accumulations up a tenth of an inch.

Winter Weather in HUTCHINSON, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light freezing rain produced ice accumulations up a tenth of an inch.  There were three fatalities south of Parkston, SD on state highway 37 when a teenage driver lost control on icy roads, crossed the center line and collided with a semi-truck traveling in the opposite direction.

Winter Weather in BEADLE, SOUTH DAKOTA
From 10-MAR-18 07:00:00 to 10-MAR-18 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Freezing rain produced ice accumulations up to two tenths of an inch around Huron.

Winter Weather in KINGSBURY, SOUTH DAKOTA
From 10-MAR-18 08:00:00 to 10-MAR-18 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light freezing rain produced ice accumulation to around a tenth of an inch near De Smet before changing over to light snow.  Snowfall totaled a half inch at De Smet, and 3.0 inches 9 miles south southwest of Arlington.