Dozens of snowplows were taking to the streets of Denver early Monday, after a powerful spring storm dropped heavy snow across parts of Colorado and Wyoming, even as stormy weather moved into the plains states and drew warnings about conditions ripe for severe thunderstorm and tornadoes. The Mother’s Day storm dropped more than a foot of sloppy, wet snow on parts of the two states. The National Weather Service issued a winter storm warning for most of northern Colorado and parts of southern Wyoming for all of Sunday and for Monday morning. Forecasters warned that instability ahead of the cold front created conditions for damaging winds as thunderstorms and tornadoes developed in Nebraska Sunday and threatened to push south. The storm also created high winds across the West. Powerful thunderstorms produced tornadoes as they moved across Nebraska on Sunday caused damage in several towns and rural […]