Sustained rainfall will settle in over the region overnight and will linger well into the predawn hours Wednesday. While the periods of heavy rainfall and even thunderstorm activity will be quite disruptive tomorrow morning, Wednesday afternoon may bring about some significant challenges during one of the busiest travel days of the year. The Storm Prediction Center has placed the entire Tri-State under a "1" on the Threat index for late tomorrow morning and early tomorrow afternoon.
A dip in shower and thunderstorm activity late tomorrow morning will allow temperatures to surge area-wide Wednesday afternoon; we'll reach up toward 65° in Evansville while others inch toward 70°. An inbound cold front will interact with these mild temperatures at the surface and begin to produce a broken line of showers and storms west of the Tri-State. Current model data suggests this may occur as early as 11AM Wednesday morning. While these storms won't necessarily look significant at first, a strong upper-level jet aloft may quickly intensify the developing thunderstorms at the surface.
The latest projections indicate that as this broken line develops ahead of the advancing cold front, some of the storms embedded within it may begin to produce damaging wind gusts in excess of 60 mph and even tornadic rotation at times. The line of storms will push eastward, reaching Evansville, Henderson and Madisonville between 1PM and 2PM before racing toward Jasper, Santa Claus and Owensboro, reaching those cities around 3PM. the last of the potentially strong to Severe storms will exit east of the Tri-State by 4PM.
Wear Your Mask.