Power Outage in Algona, IA

A coop observer in Algona reported 6 to 8 inch diameter tree branches down with a few larger 12 to 14 inch diameter branches down with flickering power. Ice accumulation at 7 am was an eighth to a quarter inch and continued to accumulate through the morning.

Public reported trees and power lines down throughout town.

Trained spotter reported several tree limbs of various size down and one large tree about 5 to 6 feet in diameter down. Numerous power outages as well. Time estimated by radar.

Numerous downed trees some up to 18 inches in diameter across the county, some buildings damaged and numerous power lines down. A railroad crossing arm was snapped off and a garage was destroyed in Whittemore, some outbuildings and a house were damaged near town as well. Agricultural impacts as well with machinery blown over, bent up and also seed loss.

Emergency Manager reported power poles down within the city. Some minor flooding occurring in a known low area in the city.

Emergency Manager reported large trees of around 1 to 2 feet in diameter down, tree branches down, and power poles down in Wesley and St. Benedict.

A large tree was blocking part of the Highway. Power lines were snapped south of town. Damage also reported in St. Joseph.

Power lines were down around town.

A large low pressure system moved across the midwest, bringing severe storms to some and wintry weather to others. Precipitation across Iowa began late on the 9th as rain, with much of the area in the warm sector of the cyclone. As the cold front passed across the state temperature dropped in the early morning hours before stalling. Temperatures across northern Iowa hovered around freezing and eventually elevated surfaces cooled enough for a transition to freezing rain. By early afternoon portions of northern Iowa saw a quarter inch or more of ice accumulation, resulting in tree damage and some power outages. Thankfully warm road temperatures mitigated travel impacts and roads were never reported to accumulate any ice at all. After a break in precipitation during the afternoon, light snow fell across northern Iowa later that night in the deformation zone with minor accumulations.

An area of thunderstorms formed over northeast Nebraska in an areas of strong theta-e advection. Precipitable water values were only around 1.3 inches. CAPE was in the 1000 to 2000 J/kg range with a downdraft CAPE of 800 J/kg. The atmosphere was strongly sheared with about 50 kts of effective shear present. The area of storms raced east at 55 to 65 MPH. The storm produced high winds, as well as tree and power line damage, as it moved through Kossuth, Humboldt, and Wright Counties. Wright County was hardest hit with some structural damage done to homes west of Clarion.