Low pressure intensified on December 10 as it moved from the lee of the central Rockies into the Great Lakes. A strong frontogenetic band developed ahead of the system, with weak instability present which resulted in a narrow and more intense band across far northwest Iowa. Snowfall from 6 to 11 inches was common along the axis of the band from south central South Dakota toward the Sioux Falls area, and into northwest Iowa.

Winter Weather in WOODBURY, IOWA
From 10-DEC-21 12:00:00 to 10-DEC-21 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall was briefly moderate between 1300-1700CST, which produced dangerous travel conditions. Snowfall totaled 2.0 inches at Sioux City.

Winter Weather in IDA, IOWA
From 10-DEC-21 13:00:00 to 11-DEC-21 01:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall was moderate to briefly heavy between 1300-1800CST, which produced dangerous travel conditions. Snowfall totaled 3.6 inches at Battle Creek.

Winter Storm in LYON, IOWA
From 10-DEC-21 09:00:00 to 10-DEC-21 23:00:00 (CST-6)
Reported by: Social Media

Snowfall was moderate to heavy at times between 1200-1900CST, and produced treacherous travel conditions. Snowfall totaled 12.0 inches at Larchwood, 11.0 inches at Lester, and 8.8 inches at Rock Rapids.

Winter Storm in DICKINSON, IOWA
From 10-DEC-21 10:00:00 to 11-DEC-21 02:00:00 (CST-6)
Reported by: COOP Observer

Snowfall was moderate to heavy at times between 1300-1900CST, and produced treacherous travel conditions. Snowfall totaled 8.0 inches at Spirit Lake, 6.5 inches at Okoboji, and 6.0 inches at Lake Park.

Winter Storm in SIOUX, IOWA
From 10-DEC-21 13:00:00 to 11-DEC-21 00:00:00 (CST-6)
Reported by: COOP Observer

Snowfall was moderate to heavy at times between 1300-1900CST, and produced treacherous travel conditions. Snowfall totaled 6.0 inches at Rock Valley.

Winter Weather in CHEROKEE, IOWA
From 10-DEC-21 13:00:00 to 11-DEC-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall was moderate to briefly heavy between 1300-1700CST, which produced dangerous travel conditions. Snowfall totaled 4.0 inches at Cherokee.

Winter Storm in OSCEOLA, IOWA
From 10-DEC-21 09:00:00 to 11-DEC-21 00:00:00 (CST-6)
Reported by: Social Media

Snowfall was moderate to heavy at times between 1200-1800CST, and produced treacherous travel conditions. Snowfall totaled 6.0 inches at Sibley.

Winter Weather in PLYMOUTH, IOWA
From 10-DEC-21 13:00:00 to 11-DEC-21 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall was moderate to briefly heavy between 1300-1700CST, which produced dangerous travel conditions. Snowfall totaled 5.0 inches at Le Mars and 4.2 inches at Remsen.

Winter Storm in BUENA VISTA, IOWA
From 10-DEC-21 13:00:00 to 11-DEC-21 03:00:00 (CST-6)
Reported by: COOP Observer

Snowfall was moderate to heavy at times between 1400-1900CST, and produced treacherous travel conditions. Snowfall totaled 6.6 inches at Sioux Rapids.

Winter Storm in CLAY, IOWA
From 10-DEC-21 13:30:00 to 11-DEC-21 02:00:00 (CST-6)
Reported by: COOP Observer

Snowfall was moderate to heavy at times between 1400-1900CST, and produced treacherous travel conditions. Snowfall totaled 8.0 inches at Royal and 6.5 inches at Spencer.

Winter Storm in O'BRIEN, IOWA
From 10-DEC-21 13:00:00 to 11-DEC-21 01:00:00 (CST-6)
Reported by: COOP Observer

Snowfall was moderate to heavy at times between 1300-1900CST, and produced treacherous travel conditions. Snowfall totaled 6.3 inches at Sanborn and 6.0 inches at Sheldon.