WASHINGTON, Ill —
The storm also slammed through parts of Wisconsin, Indiana, Michigan, Ohio and Kentucky as it made its way east into the mid-Atlantic states on Sunday night. Tornadoes, large hail and damaging winds tore through several communities, leaving thousands without power as emergency crews tried to clear roads.
Friedlein said that such strong storms are rare this late in the year because there usually isn't enough heat from the sun to sustain the thunderstorms. But he said temperatures Sunday were expected to reach into the 60s and 70s, which he said is warm enough to help produce severe weather when it is coupled with winds, which are typically stronger this time of year than in the summer.
"You don't need temperatures in the 80s and 90s to produce severe weather (because) the strong winds compensate for the lack of heating," he said. "That sets the stage for what we call wind shear, which may produce tornadoes."