Weather Alert Day: Severe storms possible again on Wednesday

The ABC 17 Stormtrack Weather Team has issued a Weather Alert Day for the potential of severe thunderstorms on Wednesday afternoon into the evening.

A low pressure system will track across the Upper Midwest or the Great Lakes between Tuesday and Wednesday, allowing winds to shift to the south across Mid-Missouri. Late Tuesday night, a complex of storms near the cold front could develop and track across northeast Missouri into central Illinois, bringing the potential of marginally severe weather and also leaving behind an outflow boundary that could trigger potential storms by Wednesday afternoon in this area.

Wednesday afternoon will be hot and humid to the south of this boundary, allowing the atmosphere to become increasingly unstable and provide energy for storms to sustain severe limits as they develop.

We'll also have strong low level winds increasing moisture across the region starting late Tuesday night. Wind shear will be sufficient at the low and mid-levels for storms to quickly become severe.

Storms could potentially fire up near the outflow boundary, if there is one nearby, by late afternoon. These initial storms could be discrete supercells capable of producing large hail and tornadoes.

Closer to the evening rush/dinner hour, storms are expected to fire up along a cold front and congeal into a line with damaging winds as the primary concern. Storms will generally move north to south, exiting and weakening after midnight.

All hazards will be possible with discrete afternoon storms, but the main concern going into the evening will be damaging winds and heavy rain. Moisture levels in the atmosphere will be high, meaning storms could have high rainfall rates, leaving another 1-2"+ through Thursday morning. Almost all of Mid-Missouri is in a level 3/5 severe risk from the Storm Prediction Center on Wednesday.