A storm system with a squall line that extended from Canada to the Gulf of Mexico turned deadly today. The thunderstorm began forming yesterday over the central and Midwestern states and began raking its way east this morning as warm weather from the Gulf collided with the cold front.

“As bad as it is right now, it’s probably going to get worse,” said meteorologist Greg Forbes for The Weather Channel.

DNews Stormtracker

After nearly 19,000 outages, about 8,000 customers were without power today in Nashville, Tenn, where a 47-year-old man died when a tree fell on a shed during the storm.

A tornado with wind speeds up to 135 mph touched down in Mount Juliet, taking the roof off a three-story office building and overturning a semi truck, injuring the driver, John Jewell, Wilson County Emergency Management Director, told The Weather Channel.

via The Weather Channel

IMAGE: Severe weather brews over Midwestern and central United States in this GOES East satellite image taken on Jan. 29, 2013.