Heavy precipitation with rapid cooling produced a combination of freezing rain, sleet, and snow over much of northwest Iowa from the evening hours of April 9th, to the morning of April 11th. Moderate to heavy ice accumulations were reported mostly near the northern border of the state. This was followed by light to moderate snow and sleet accumulations. The ice accumulations, greater than a half inch in some areas, caused major tree and power line damage in the ice storm area. Fallen branches and limbs were numerous, trees were destroyed, roads were blocked, and some vehicles and homes suffered damages from the falling trees, limbs, and branches. There were also major power outages because of the power line and power pole damage. Strong winds with and following the storm, not strong enough to cause significant damage under dry conditions, contributed greatly to the tree and power line damage. The snow and sleet accumulations made travel difficult, especially in areas where downed trees and power lines were already causing road blockages. Both ice and snow accumulations were less, and caused fewer problems, further south, including the Sioux City to Storm Lake areas.

Winter Storm in OSCEOLA, IOWA
From 09-APR-13 17:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

An extended period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to between a quarter and half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 6 inches near Sibley. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind. Both urban areas and rural electric cooperatives suffered major power line damage. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made travel impossible in many areas, resulting in schools and businesses being forced to close.

Winter Weather in WOODBURY, IOWA
From 09-APR-13 18:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Periods of light rain and drizzle changed to freezing rain and freezing drizzle, producing light icing. The precipitation then changed to snow and sleet, with an accumulation of 3.5 inches at Sioux City. The winter made travel hazardous and closed or delayed some schools.

Winter Storm in DICKINSON, IOWA
From 09-APR-13 17:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

An extended period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to between a quarter and half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 3 to 6 inches. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind. Both urban areas and rural electric cooperatives suffered major power line damage. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made travel impossible in many areas, resulting in schools and businesses being forced to close.

Winter Storm in SIOUX, IOWA
From 09-APR-13 17:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

An extended period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to between a quarter and half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 5 inches at Rock Valley. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind, especially over the northern part of the county. Both urban areas and rural electric cooperatives suffered major power line damage. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made travel impossible in many areas, resulting in schools and businesses being forced to close.

Winter Storm in CLAY, IOWA
From 10-APR-13 05:00:00 to 11-APR-13 08:00:00 (CST-6)
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

A period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to between a quarter and half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 2 to 4 inches. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind, especially over the northern part of the county. Both urban areas and rural electric cooperatives suffered major power line damage. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made travel impossible in many areas, resulting in schools and businesses being forced to close.

Winter Storm in LYON, IOWA
From 09-APR-13 09:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 5.00M
Crop damage: 0.00K
Reported by: Law Enforcement

An extended period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to between a quarter and half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 6 inches at Rock Rapids. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind. Both urban areas and rural electric cooperatives suffered major power line damage. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made travel impossible in many areas, resulting in schools and businesses being forced to close.

Winter Weather in IDA, IOWA
From 09-APR-13 18:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Periods of light rain and drizzle changed to freezing rain and freezing drizzle, producing light icing. The precipitation then changed to snow and sleet, with an accumulation of 1 to 3 inches. The winter made travel hazardous.

Winter Weather in CHEROKEE, IOWA
From 09-APR-13 18:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Periods of light rain and drizzle changed to freezing rain and freezing drizzle, producing light icing. The precipitation then changed to snow and sleet, with an accumulation of 2 inches at Cherokee. The winter made travel hazardous and closed or delayed some schools.

Winter Weather in BUENA VISTA, IOWA
From 09-APR-13 18:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Periods of light rain and drizzle changed to freezing rain and freezing drizzle, producing light icing. The precipitation then changed to snow and sleet, with an accumulation of 1 to 3 inches. The winter made travel hazardous.

Winter Storm in O'BRIEN, IOWA
From 09-APR-13 17:00:00 to 11-APR-13 06:00:00 (CST-6)
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

An extended period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to between a quarter and half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 3 to 6 inches. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind, especially over the northern part of the county. Both urban areas and rural electric cooperatives suffered major power line damage. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made travel impossible in many areas, resulting in schools and businesses being forced to close.

Winter Storm in PLYMOUTH, IOWA
From 09-APR-13 17:00:00 to 11-APR-13 06:00:00 (CST-6)
Crop damage: 0.00K
Reported by: Law Enforcement

An extended period of precipitation began with freezing rain and freezing drizzle producing light ice accumulations, then changing to sleet and then snow, with sleet and snow accumulations reaching 2 to 4 inches. The winter precipitation made travel very difficult, resulting in schools and businesses being forced to close.