Tornado rips through Minnesota town Storms move through the Midwest, spawning a reported 17 tornadoes. One devastates a southern Minnesota town. Cold snap leaves Denver damp and chilly Temperatures take a deep dive in Denver, sending residents in search of coats and sweaters a day after donning shorts. Temperatures rise into the 90s in the Northeast, giving residents a taste of summer. A Michigan city takes steps to make sure winter walkers have clear sidewalks when snow, sleet and ice coat the ground.
Summer heat spawns smog Air quality can plummet when temperatures skyrocket.
Find out why. Floodwall controversy builds Mayor wants Federal money to help pay for study on removable floodwall. Mississippi reaches second crest St. Paul, Minn., residents weather the second crest of the Mississippi River. Elsewhere, churning river waters threaten a levee. Scattered showers and storms will produce localized areas of severe weather and heavy rain across the nation's heartland while more record warmth is set to bake the Northeast on Friday.