Eastern South Dakota could see more than a foot of snow and 50 mph winds , `` creating whiteout conditions , '' the weather agency said . NEW : 90 % of two Colorado towns still do n't have power , an official says . NEW : Monday will bring warmer temperatures and the threat of collapsing roofs . two people are killed in the blizzard , including a 14-year-old Minnesota boy . The next major Monday storm is expected to strike between Boston and Minnesota .
NEW : 90 % of two Colorado towns still do n't have power , an official says . NEW : Monday will bring warmer temperatures and the threat of collapsing roofs . two people are killed in the blizzard , including a 14-year-old Minnesota boy . The next major Monday storm is expected to strike between Boston and Minnesota .