Thursday, May 15, 2025 6 PM

Atmosphere is setting up for a big day of severe weather tomorrow and tomorrow night. Forecasts point to a major outbreak starting tomorrow midday over Arkansas, MO, IL with all severe categories moderate to high.  That outbreak will consolidate into one (or more) squall lines as it moves toward IN/KY tomorrow evening – roughly 8 PM to Midnight.That’s not the only problem – atmosphere also favors individual “discrete supercells” ahead of the cold front over western IN/KY tomorrow afternoon.  If these develop, they can be very damaging.  Supercells in the warm, humid air mass ahead of a cold front can be very dangerous.Meanwhile, as the warm air mass works its way northward tonight, we could see some non-severe thunderstorms this evening and again toward morning.