100 years ago, USA's worst tornado killed nearly 700 people: Could it happen again?
The Tri-State Tornado barreled across more than 200 miles, decimating entire towns in and leaving thousands homeless on 1925.
High winds threaten fire risks, blizzard conditions for nation's battered midsection
Storms Tuesday night could target Missouri, Kansas, Nebraska and Iowa with significant and damaging hail. Blizzard warnings possible in Upper Midwest.