Increasing warm advection brought a period of freezing rain to northwest Iowa on January 2, which was reinvigorated by convection early on January 3. The most significant ice accumulations in excess of one-quarter inch occurred toward Highway 71, with lesser amounts to the west. Impacts were lessened by air temperatures which climbed to near or above freezing after the initial push of freezing rain. Colder air eventually resulted in a changeover to snow during January 3, with a band of heavy snowfall across far northern portions of northwest Iowa and rates up to 1 to 2 inches per hour during the early morning and midday hours. Roads in far northwest Iowa were closed or impassable during the height of the event.

Ice Storm in CLAY, IOWA
From 03-JAN-23 04:00:00 to 03-JAN-23 12:00:00 (CST-6)
Reported by: ASOS

Freezing rain resulted in ice accumulations of almost one-half inch at Spencer. Cooler air changed precipitation to snow during the afternoon of January 3, which resulted in an accumulation of 3.7 inches at Spencer on top of the prior ice.

Ice Storm in DICKINSON, IOWA
From 03-JAN-23 00:00:00 to 03-JAN-23 12:00:00 (CST-6)
Reported by: COOP Observer

After a period of overnight and early morning freezing rain with up to a half inch of ice accumulation, heavy snowfall developed at times during the late morning and early afternoon of January 3 with a two-day total of 8.4 inches at Spirit Lake.

Winter Storm in LYON, IOWA
From 02-JAN-23 16:00:00 to 04-JAN-23 01:00:00 (CST-6)
Reported by: COOP Observer

After a brief period of light freezing rain with a glaze of accumulation, heavy snowfall developed at times during the morning of January 3 with a two-day total of 15.7 inches at Rock Rapids.

Winter Storm in SIOUX, IOWA
From 02-JAN-23 18:00:00 to 03-JAN-23 22:00:00 (CST-6)
Reported by: COOP Observer

After a brief period of light freezing rain with a glaze of accumulation, heavy snowfall developed at times during the morning of January 3 with a two-day total of 7.0 inches at Rock Valley and 6.0 inches at Sioux Center.

Winter Storm in OSCEOLA, IOWA
From 02-JAN-23 22:00:00 to 03-JAN-23 16:00:00 (CST-6)
Reported by: COOP Observer

After a brief period of freezing rain with a light glaze of ice accumulation, heavy snowfall developed at times during the morning of January 3 with a two-day total of 12.0 inches at Sibley.

Winter Weather in BUENA VISTA, IOWA
From 03-JAN-23 08:00:00 to 04-JAN-23 22:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain resulted in ice accumulations up to two-tenths of an inch around Storm Lake and Sioux Rapids during the overnight and early morning of January 3.  Cooler air forced a changeover to snow later on January 3, and resulted in 2.0 inches at Sioux Rapids and 1.0 inch in Storm Lake.

Winter Weather in WOODBURY, IOWA
From 02-JAN-23 18:00:00 to 03-JAN-23 16:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain resulted in ice accumulations up to two-tenths of an inch at Sioux City during the late evening on January 2 into the early morning hours of January 3.  Cooler air forced a changeover to snow later on January 3, and resulted in snowfall of 2.0 inches at Sioux City and 1.5 inch 4 miles north-northeast of Hornick.

Winter Weather in PLYMOUTH, IOWA
From 03-JAN-23 03:00:00 to 03-JAN-23 17:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain resulted in ice accumulations up to a tenth of an inch at Le Mars during the late evening on January 2 into the early morning hours of January 3.  Cooler air forced a changeover to snow on January 3, and resulted in snowfall of 2.4 inches at Remsen and 2.3 inches at Le Mars.

Winter Weather in CHEROKEE, IOWA
From 02-JAN-23 20:00:00 to 03-JAN-23 22:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain resulted in ice accumulations up to two tenths of an inch at Cherokee during the late evening on January 2 into the early morning hours of January 3.  Cooler air forced a changeover to snow on January 3, and resulted in snowfall of 1.2 inches at Cherokee.

Winter Weather in IDA, IOWA
From 02-JAN-23 18:00:00 to 03-JAN-23 16:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain resulted in ice accumulations up to two-tenths of an inch at Battle Creek during the late evening on January 2 into the early morning hours of January 3.  Cooler air forced a changeover to snow later on January 3, and resulted in snowfall of 1.7 inches near Arthur.

Ice Storm in O'BRIEN, IOWA
From 02-JAN-23 16:00:00 to 03-JAN-23 12:00:00 (CST-6)
Reported by: COOP Observer

After a period of light freezing rain with an accumulation up to a quarter inch near Hartley, heavy snowfall developed at times during the morning of January 3 with a two-day total of 5.6 inches at Sanborn and 5.0 inches at Sheldon.