By Renee Duff – AccuWeather
A storm system tracking across the Midwest will trigger thunderstorms capable of producing damaging winds and flash flooding over the lower Mississippi, Tennessee and Ohio valleys into Tuesday night.
Thunderstorms that first initiated over Oklahoma during Monday night began to develop into a squall line during Tuesday morning.
A squall line is a continuous band of thunderstorms that can produce damaging wind gusts, flooding downpours and hail. Brief tornadoes are also possible along the leading edge of this line.