Southward pushing cold air near the surface interacted with a post-frontal wave in southwest flow aloft to produce a prolonged period of light snowfall, which began as a period of light freezing rain and freezing drizzle across northwest Iowa during the afternoon and evening of February 21. In addition to snowfall which accumulated from as much as 1 to 2 inches, strong northerly winds produced dangerous wind chills from 25 below to 30 below zero from later on February 21 through the afternoon of February 22.

Winter Weather in CHEROKEE, IOWA
From 21-FEB-22 16:00:00 to 22-FEB-22 04:00:00 (CST-6)
Reported by: AWOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21.

Winter Weather in IDA, IOWA
From 21-FEB-22 17:00:00 to 22-FEB-22 04:00:00 (CST-6)
Reported by: ASOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21.

Winter Weather in DICKINSON, IOWA
From 21-FEB-22 18:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

A period of freezing drizzle produced a thin glaze of ice on surfaces during the early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 1.5 inches near Spirit Lake and 1.0 inch at Lake Park, when combined with winds which gusted as high as 32 mph at Milford and 30 mph near Spirit
Lake, visibility was around one mile and occasionally one-half mile or less between 0730-1330CST February 22. In addition, wind chill was as low as -25F.

Winter Weather in O'BRIEN, IOWA
From 21-FEB-22 16:00:00 to 22-FEB-22 15:00:00 (CST-6)
Reported by: COOP Observer

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 1.6 inches at Sheldon, when combined with winds which gusted as high as 43 mph at Sheldon, visibility was around one mile or less at times between 0700-1100CST February 22.

Winter Weather in LYON, IOWA
From 21-FEB-22 16:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: Mesonet

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 0.6 inch at Sibley, when combined with winds which gusted as high as 43 mph at Sheldon and 40 mph at Sioux Falls, visibility was around one mile or less at times between 0730-1200CST February 22. In addition, wind chill was as low as -25F.

Winter Weather in SIOUX, IOWA
From 21-FEB-22 16:00:00 to 22-FEB-22 14:00:00 (CST-6)
Reported by: AWOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 1.0 inch at Rock Valley and 0.6 inch at Sibley, when combined with winds which gusted as high as 41 mph near Maurice and 34 mph near Orange City, visibility was briefly around one mile at times between 0700-1100CST February 22.

Winter Weather in PLYMOUTH, IOWA
From 21-FEB-22 16:00:00 to 22-FEB-22 08:00:00 (CST-6)
Reported by: AWOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 0.5 inch at Le Mars, when combined with winds which gusted as high as 36 mph at Le Mars, visibility was briefly around one mile at times between 0000-0200CST February 22.

Winter Weather in BUENA VISTA, IOWA
From 21-FEB-22 16:00:00 to 22-FEB-22 14:00:00 (CST-6)
Reported by: AWOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the very late afternoon and evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 0.4 inch near Sioux Rapids, when combined with winds which gusted as high as 45 mph at Storm Lake, visibility was around one mile between 0700-0900CST February 22.

Winter Weather in OSCEOLA, IOWA
From 21-FEB-22 17:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 0.6 inch at Sibley, when combined with winds which gusted as high as 43 mph at Sheldon and 38 mph at Worthington, visibility was around one mile or less at times between 0730-1330CST February 22. In addition, wind chill was as low as -25F.

Winter Weather in CLAY, IOWA
From 21-FEB-22 17:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: ASOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the very late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 0.5 inch near Everly, when combined with winds which gusted as high as 44 mph at Spencer, visibility was around one mile between 0700-1100CST February 22.

Winter Weather in WOODBURY, IOWA
From 21-FEB-22 17:00:00 to 22-FEB-22 04:00:00 (CST-6)
Reported by: ASOS

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Icy road conditions resulted in periods of difficult travel across Sioux City.