ST. LOUIS — A strong cold front will sweep across Missouri and Illinois Tuesday afternoon into Tuesday night. Warm, somewhat humid air ahead of the front along with stronger winds aloft will allow thunderstorms to blossom ahead of the cold front.
The storms are expected to become organized into the evening as a line moves from northwest to southeast across the area. The ingredients appear to be coming together for at least a few of the storms to produce gusty winds and some large hail and maybe a brief, isolated tornado or two.
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LATEST HIGH RESOLUTION FUTURECAST
The main threat will be during the evening from about 7 p.m. until 12 a.m. across the metro St. Louis area. The main threats will be damaging winds in excess of 60 mph and also large hail 1" - 2" in diameter. While an isolated tornado cannot be ruled out, the best chances seem to be farther to the north across northeast Missouri and west central Illinois.
Colder air will filter in behind the system providing a chilly, breezy and damp Wednesday. The week will end with a warming trend as temperatures climb into the 80s Saturday afternoon.
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