can you time this out for us? reporter: this will be the kicker system that changes our weeks-long pattern. it will accelerate as it moves up the east coast. a tornado threat in the florida panhandle through parts of south georgia. you see the storms firing. also you see the cold blast, that ribbon of snow all the way down into mississippi. so winter warnings stretching from alabama through southern new jersey as this begins to take shape and wind its way up the east coast. as it does so, more thunderstorms tomorrow across the carolinas. heavy snow tomorrow morning. roanoke, d.c., baltimore, philly, 2 to 6 inches of snow. it will start out wet. the ground is warm but it will pile up. mostly south of new york, along i-95. the big story is the big chill. temperatures well below freezing after being in the midwest. linsey? rob, thank you. heavy snow in colorado is not helping search efforts after the devastating wildfires there. two people still remain missing. many residents are ju
tonight. we re going to turn next here to that slow-moving storm front. ice, snow, flooding rain, triggering weather alerts in 20 states, from texas all the way up to new york. city skidding on icy roads, flipping onto its side there. and near pittsburgh, a police officer rescued from his patrol car after being trapped by rising flood waters there. so, let s get right to meteorologist rob marciano, with us again tonight, tracking it all for us. hey, rob. reporter: hey, david. even though temperatures here in the northeast have dropped 40 degrees since yesterday, the pattern elsewhere really hasn t changed. check it out. the jet stream in the same spot. we ve got flash flood warnings happening right now across little rock, the rain in through missouri, snow from nebraska through wisconsin. the heavy rain tomorrow, though, in through cincinnati, across the ohio river in the morning. another round develops across northeast texas, in through tomorrow night, across the mississippi. satu