Leading up to the blizzard, low pressure built off of the Rockies in eastern Colorado and moved into the Kansas, Oklahoma, Texas region.  Throughout the day on the 23rd, the surface low pressure system progressed eastward before turning more northeasterly during the evening.  Periods of rain fell initially over much of Iowa with temperatures ranging from around freezing in the northwest to upper 40s in the south.  As temperatures dropped snow eventually enveloped northwest Iowa along with strengthening winds.  In the end, the combination of heavy snow (up to a 10 to 12 inches) and strong winds (gusts to 60 mph) allowed blizzard conditions to set in for periods across northwest and north central Iowa.  Blizzard conditions began during the evening on the 23rd and lasted into the afternoon and evening hours the 24th as the system progressed eastward.

Blizzard in KOSSUTH, IOWA
From 23-FEB-17 20:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in SAC, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in CRAWFORD, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in CALHOUN, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in WEBSTER, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in CARROLL, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in GREENE, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in CERRO GORDO, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in WRIGHT, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in HAMILTON, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in FRANKLIN, IOWA
From 24-FEB-17 01:00:00 to 24-FEB-17 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in POCAHONTAS, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in HUMBOLDT, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in HANCOCK, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in WORTH, IOWA
From 24-FEB-17 00:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in WINNEBAGO, IOWA
From 23-FEB-17 20:00:00 to 24-FEB-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in EMMET, IOWA
From 23-FEB-17 20:00:00 to 24-FEB-17 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Blizzard in PALO ALTO, IOWA
From 23-FEB-17 20:00:00 to 24-FEB-17 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet