New snowfall varying from 3 to 8 inches, previous snow cover, and northwest winds gusting to around 40 mph combined to produce widespread blowing and drifting snow over all of northwest Iowa. Low visibilities of a quarter mile or less were observed to be widespread in Dickinson County. Elsewhere in northwest Iowa, near blizzard conditions were observed, with local visibilities a quarter mile or less. Travel was brought to a standstill during the worst conditions. Even where visibilities were higher, travel was extremely difficult and dangerous because of the snowfall, drifting snow, and dangerous wind chills that accompanied the storm. The storm forced the closing of schools and businesses, and postponement of athletic events and other activities. The snow and blowing snow took place on January 6th and 7th, while dangerous wind chills continued well into January 8th.
New snowfall varying from 2 to 8 inches, previous snow cover, and northwest winds gusting to over 40 mph combined to produce widespread blowing and drifting snow over all of southeast South Dakota. The worst conditions, with widespread visibilities below a quarter mile, were from the James to Missouri River valleys, or along and southwest of a line from Huron to Vermillion. These conditions were also observed more locally to the east of this area. Travel was brought to a standstill during the worst conditions. Even where visibilities were a little higher, travel was extremely difficult and dangerous because of the snowfall, drifting snow, and dangerous wind chills that accompanied the storm. The storm forced the closing of schools and businesses, and postponement of athletic events and other activities. The snow, blowing snow, and blizzard conditions took place on January 6th and 7th, while dangerous wind chills continued well into January 8th.

Winter Storm in O'BRIEN, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 5 to 8 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 7.5 inches at Sheldon. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in LYON, IOWA
From 07-JAN-10 12:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Winter Storm in OSCEOLA, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 6 inches near Ocheyedan. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Winter Storm in CHEROKEE, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 5 to 8 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 7.5 inches in the town of Cherokee. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in WOODBURY, IOWA
From 07-JAN-10 12:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Extreme Cold/Wind Chill in SIOUX, IOWA
From 07-JAN-10 12:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Winter Storm in CLAY, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 6.5 inches at Spencer. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in IDA, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Winter Storm in LYON, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 6 inches near Rock Rapids. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in PLYMOUTH, IOWA
From 07-JAN-10 12:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Blizzard in DICKINSON, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to over 40 mph produced widespread blizzard conditions, with visibilities less than a quarter mile. New snowfall included 5.5 inches at Spirit lake. Schools and businesses were closed, and travel became impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Winter Storm in WOODBURY, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 6.6 inches at Sioux City. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in BUENA VISTA, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Winter Storm in PLYMOUTH, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 6.5 inches at Akron. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Winter Storm in SIOUX, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall of 4 to 7 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 6 inches at Rock Valley. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in OSCEOLA, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Extreme Cold/Wind Chill in CLAY, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Winter Storm in IDA, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 3 to 6 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 4 inches at Galva. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.

Extreme Cold/Wind Chill in CHEROKEE, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Extreme Cold/Wind Chill in DICKINSON, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Extreme Cold/Wind Chill in O'BRIEN, IOWA
From 07-JAN-10 21:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Persistent north to northwest winds combined with very cold air to produce wind chill values the frequently dropped to 35 below zero or a little colder. These extremely dangerous wind chills added to the hazards produced by the preceding winter storm. As winds slowly subsided during the night of January 7th, temperatures continued to drop to well below zero, keeping the wind chills at the very dangerous level through the morning of January 8th.

Winter Storm in BUENA VISTA, IOWA
From 06-JAN-10 06:00:00 to 07-JAN-10 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 3 to 6 inches, previously existing snow cover, and northwest winds gusting to around 40 mph produced widespread blowing snow. Near blizzard conditions were produced in some areas, with visibilities locally a quarter mile or less. New snowfall included 4 inches near Storm Lake. Schools and businesses were closed, and travel became nearly impossible in much of the area. The wind combined with cold temperatures to produce wind chills colder than 35 below zero during the latter part of the storm. This extreme cold continued into the next day, Friday, January 8th.