Power Outage in North Sioux City, SD

Numerous trees were snapped with powerlines down throughout Dakota Dunes.

Thunderstorm winds snapped off a single power pole. Property damage costs are rough estimates.

Ice accumulated to a quarter to half inch across the northern portions of Union County. Areas near Beresford and Alcester reported a quarter to half inch of ice accumulation, and as winds increased during the overnight and early day on April 11, scattered power outages resulted as stress from ice accumulation took down power lines. Snowfall toward the end of the storm was minimal, from a trace to 2 inches. Property damage costs include damage to utilities.

Freezing rain of one to two tenths of an inch caused icy roads, and accumulated on trees, power lines, and other surfaces. Around 0.20 inch of icing was reported at South Sioux City. Law enforcement agencies reported a few vehicles accidents on the ice, but no known injuries, with traffic being light because of the holiday, business closings, and activity cancellations. Light winds prevented significant damage to trees and power lines.

High winds from a westerly direction followed a low pressure system which had brought Christmas Day rain and thunderstorms. There were reports of power lines and branches down with resulting power outages, and traffic lights damaged. Sustained winds over 40 mph and gusts over 55 mph were estimated by law enforcement.

Westerly winds behind a cold front reach sustained speed of 40 to 45 mph for a few hours. The high winds caused spotty power line and traffic light damage.

Freezing rain produced a quarter to a half inch of glazing, topped by sleet accumulations of similar amounts, with most of the icing in the northern part of the county. Driving and walking surfaces were made very icy, and the ice accumulations caused an unknown amount of damage to trees and power lines.

Freezing rain produced ice accumulations of a quarter to a half inch. Travel and walking were made extremely hazardous and difficult. Damage to trees and power lines was reported, and there were scattered power outages. Schools were closed and several accidents were reported, including one accident involving 5 semis on Interstate 29.

Thunderstorm winds caused widespread tree and power line damage, including trees up to 16 inches in diameter blown down.

Snow accumulating 5 to 8 inches over the northern part of Union County was accompanied by north to northeast winds gusting to around 40 mph. The combination resulted in visibilities frequently lowering to a quarter mile or less and, along with drifting snow, made travel difficult to impossible. Power outages were reported from snow weighting down power lines, and snow laden trees falling on lines.

Thunderstorm winds blew down power lines and caused tree damage, including several trees blown down. The damage resulted in a power outage over the area.

Thunderstorm winds blew down trees and power lines.

A tornado caused tree damage, including several trees blown down. The tornado also blew down power lines, causing local power outages.

Thunderstorm winds caused widespread damage to trees, power poles, and lines, resulting in power outages affecting most of North Sioux City. Some large trees were sheared from their trunks. Tree debris damaged vehicles, homes, garages, and sheds.

Thunderstorm winds caused tree and power line damage, resulting in power outages in parts of the county. The winds also destroyed a silo, blew out the wall of a barn, the roof of a shed, windows on the south side of a house, and damaged road signs and outbuildings.