A weaker winter storm moved into the area and added more ice and snow to the snow pack received the other day. This system moved in from the south and brought along a strong pull of warm air aloft. This led to a lot more ice accumulation than was expected prior to the event. While the storm was supposed to lead to mostly snow for the northern half of our forecast area, those areas received mainly freezing rain and sleet through most of the afternoon. This led to widespread ice accumulations of 0.10-0.25. In the southwest part of our forecast area, more ice accumulation was noted, with many locations reporting around 0.25 or even more. Along with the accumulating ice, some downed tree limbs and power outages were a result.
Mid afternoon, the freezing rain began to switch to snow from a line around Iowa City, IA to Freeport, IL. A relatively strong band formed in this location and dropped around 4 of snow, especially in the Iowa City area.  There were widespread reports of 2.3 inches of snow and sleet accumulation across eastern Iowa.

Winter Weather in SCOTT, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Official NWS observations at the Davenport Municipal Airport were 0.7 of snow and sleet. A public report of 2.5 inches of snow and sleet 2 miles west southwest of Davenport. A trained spotter one mile west of Bettendorf estimated a quarter of an inch of freezing rain. An NWS employee reported a quarter of an inch of ice 2 miles east northeast of Davenport.

Winter Weather in JOHNSON, IOWA
From 01-JAN-21 08:00:00 to 01-JAN-21 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall reports ranged from 2.0 inches 1 mile west of Elmira to .5 inches 1 mile east of Iowa City. 4.0 inches was also reported 2 miles south southeast of Hills.

Winter Weather in MUSCATINE, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer reported 0.8 inches of snow and sleet along with a glaze of ice. There were two public reports of 0.25 to 0.30 inches of freezing rain near Muscatine as well.

Winter Storm in LOUISA, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer in Columbus Junction reported 1.5 inches of snow.

Winter Weather in CEDAR, IOWA
From 01-JAN-21 09:00:00 to 01-JAN-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer in Lowden reported 0.2 inches of freezing and 0.2 inches of sleet. A trained spotter in Mechanicsville estimated 2.5 inches of snow.

Winter Storm in VAN BUREN, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall reports ranged from 1.5 inches 3 miles west of Mount Sterling to 2.0 inches of snow and sleet in Selma.

Winter Storm in LEE, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer reports ranged from 3.0 inches of snow in Fort Madison to 3.3 inches of sleet and snow in Donnellson.

Winter Storm in HENRY, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter near New London reported 1.6 inches of snow and 0.1 inches of ice.

Winter Storm in DES MOINES, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall reports ranged from 2.0 inches from the The COOP observer 2 miles south of Burlington to 3.0 inches from a trained spotter 2 miles north of Burlington.

Winter Weather in JEFFERSON, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer in Fairfield reported inches of snow and sleet.

Winter Weather in WASHINGTON, IOWA
From 01-JAN-21 06:00:00 to 01-JAN-21 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public report of 3 inches of snow in Washington.