With cold air entrenched north of a warm front across southern Nebraska and Iowa, lift associated with a strong upper-level jet focused atop the cold dome resulted in widespread light freezing rain and drizzle, and some areas of snow deeper into the cold air.  The freezing rain developed during the late night and early morning hours, and generally ended by later morning or early afternoon. Ice accumulations varied from a few hundredths to almost a quarter inch, while accumulated snow was mainly less than an inch from west of the James River through the Highway 14 corridor in east central South Dakota.

Winter Weather in BROOKINGS, SOUTH DAKOTA
From 22-OCT-20 04:00:00 to 22-OCT-20 07:00:00 (CST-6)
Reported by: AWOS

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.

Winter Weather in BRULE, SOUTH DAKOTA
From 22-OCT-20 06:00:00 to 22-OCT-20 18:00:00 (CST-6)
Reported by: AWOS

Light freezing drizzle started prior to sunrise and continued into the early afternoon before changing to light snowfall.  Light ice accumulation on roadways produced treacherous conditions on Interstate 90 for several hours.  At 0750CST, a vehicle slid off the eastbound lane around mile marker 281 (2 miles west of Kimball) and resulted in the fatality (indirect) of the driver. Ice accumulation was around a tenth of an inch, with 1.0 inches of snowfall reported 5 miles south southeast of Chamberlain.

Winter Weather in SANBORN, SOUTH DAKOTA
From 22-OCT-20 05:00:00 to 22-OCT-20 15:00:00 (CST-6)
Reported by: Department of Highways

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours. Drizzle changed to light snow around 1400CST, with accumulation of 0.2 inch 4 miles northeast of Forestburg on top of the light coating of ice.

Winter Weather in MINER, SOUTH DAKOTA
From 22-OCT-20 05:00:00 to 22-OCT-20 14:00:00 (CST-6)
Reported by: Department of Highways

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.

Winter Weather in LINCOLN, SOUTH DAKOTA
From 22-OCT-20 03:30:00 to 22-OCT-20 11:00:00 (CST-6)
Reported by: Broadcast Media

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of two tenths of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.  Brief power outages occurred during the early morning hours.

Winter Weather in MINNEHAHA, SOUTH DAKOTA
From 22-OCT-20 03:30:00 to 22-OCT-20 12:00:00 (CST-6)
Reported by: ASOS

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of two tenths of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.  Brief power outages occurred during the early morning hours to over 4000 customers.

Winter Weather in AURORA, SOUTH DAKOTA
From 22-OCT-20 05:00:00 to 22-OCT-20 18:00:00 (CST-6)
Reported by: Department of Highways

Light freezing drizzle started prior to sunrise and continued into the early afternoon before changing to light snowfall.  Light ice accumulation on roadways produced treacherous conditions on Interstate 90 for several hours.  Ice accumulation was around a tenth of an inch, topped by 0.7 inch of snowfall at White Lake.

Winter Weather in DAVISON, SOUTH DAKOTA
From 22-OCT-20 04:00:00 to 22-OCT-20 14:00:00 (CST-6)
Reported by: ASOS

Light freezing drizzle started prior to sunrise and continued into the early afternoon, and produced up to a tenth of an inch ice accumulation.  Spotty ice covered roadways produced dangerous conditions for several hours.

Winter Weather in HANSON, SOUTH DAKOTA
From 22-OCT-20 04:00:00 to 22-OCT-20 13:00:00 (CST-6)
Reported by: Department of Highways

Light freezing drizzle started prior to sunrise and continued into midday, and produced up to a tenth of an inch ice accumulation.  Spotty ice covered roadways produced dangerous conditions for several hours.

Winter Weather in MCCOOK, SOUTH DAKOTA
From 22-OCT-20 04:00:00 to 22-OCT-20 12:00:00 (CST-6)
Reported by: Department of Highways

Light freezing drizzle started prior to sunrise and continued through the morning, and produced up to a tenth of an inch ice accumulation.  Spotty ice covered roadways produced dangerous conditions for several hours.  Brief power outages occurred during the early morning hours.

Winter Weather in TURNER, SOUTH DAKOTA
From 22-OCT-20 03:30:00 to 22-OCT-20 11:00:00 (CST-6)
Reported by: Broadcast Media

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of a tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.  Brief power outages to over 100 customers occurred during the early morning hours.

Winter Weather in HUTCHINSON, SOUTH DAKOTA
From 22-OCT-20 04:00:00 to 22-OCT-20 13:00:00 (CST-6)
Reported by: Broadcast Media

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.  Brief power outages occurred during the early morning hours.

Winter Weather in DOUGLAS, SOUTH DAKOTA
From 22-OCT-20 04:30:00 to 22-OCT-20 11:00:00 (CST-6)
Reported by: Department of Highways

Light freezing drizzle started prior to sunrise and continued into the early afternoon, and produced up to a tenth of an inch ice accumulation.  Spotty ice covered roadways produced dangerous conditions for several hours.

Winter Weather in MOODY, SOUTH DAKOTA
From 22-OCT-20 03:30:00 to 22-OCT-20 12:00:00 (CST-6)
Reported by: Broadcast Media

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of two tenths of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.  Brief power outages occurred during the early morning hours.

Winter Weather in LAKE, SOUTH DAKOTA
From 22-OCT-20 03:30:00 to 22-OCT-20 10:00:00 (CST-6)
Reported by: AWOS

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenths of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours.  Brief power outages occurred during the early morning hours.

Winter Weather in BEADLE, SOUTH DAKOTA
From 22-OCT-20 06:00:00 to 22-OCT-20 18:00:00 (CST-6)
Reported by: ASOS

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours. Drizzle changed to light snow around 1330CST, with a dusting of 0.2 inches in Huron on top of the ice accumulation.

Winter Weather in KINGSBURY, SOUTH DAKOTA
From 22-OCT-20 05:00:00 to 22-OCT-20 12:00:00 (CST-6)
Reported by: COOP Observer

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours. Drizzle changed to light snow around 1330CST, with a dusting of 0.3 inches in De Smet on top of the ice accumulation.

Winter Weather in JERAULD, SOUTH DAKOTA
From 22-OCT-20 06:00:00 to 22-OCT-20 18:00:00 (CST-6)
Reported by: COOP Observer

Light freezing drizzle started prior to sunrise and continued through the morning. Ice accumulation on elevated surfaces reached upward of one tenth of an inch, with lesser ice also accumulating on roads and bridges which produced dangerous conditions for several hours. Drizzle changed to light snow around 1400CST, with accumulation of 1.0 inch at Wessington Springs on top of the light coating of ice.