Tornadoes, severe storms slam America's heartland | LiveNOW from FOX

A tornado outbreak is unfolding Wednesday for parts of the lower Mississippi Valley into the mid-South and lower Ohio Valley, including the threat of multiple long-track EF-3 or stronger tornadoes. NOAA's Storm Prediction Center (SPC) upgraded portions of Arkansas, Missouri, Illinois, Kentucky, Tennessee and Mississippi to a rare Level 5 out of 5 “high risk“ of severe weather. A massive tornado was spotted in Arkansas, where officials issued a Tornado Emergency – the most dire of tornado alerts – for towns in the path of the storm, such as Leachville and Monette. In Potosi, Missouri, firefighters reported responding to at least one residence that was impacted by a tornado on Wednesday afternoon. Local authorities were still in damage assessment mode late on Wednesday, responding to calls for assistance. Subscribe to LiveNOW from FOX! Where to watch LiveNOW from FOX: Follow us @LiveNOWFOX on Twitter: Raw and unfiltered. Watch a non-stop stream of breaking news, live events and stories across the nation. Limited commentary. No opinion. Experience LiveNOW from FOX.