A major blizzard that slammed northwestern South Dakota last Thursday and Friday is still having a significant impact on the area. Power poles were toppled as heavy snow and strong winds buffeted the area. Despite warm temperatures, much of western Harding County remained under a blanket of snow as late as Monday afternoon. Repair crews have been working tirelessly through the melting snow and mud. Officials in South Dakota say power may not be restored to some rural customers for another 10 days to two weeks. The storm caused 3,700 power poles to fall, including 126 large transmission poles, each weighing more than a ton.