We've got some stormy weather in the forecast tonight. Storms have been moving incredibly slow through the evening. Radar imagery as of around 9:30pm is indicating the some of the heaviest rainfall now beginning to impact Shelby and St. Clair Counties.
A very moist tropical airmass is in place. If you've been outside today, you probably noticed just how sticky the air felt. This moist air is the fuel for thunderstorms. Instability levels are reaching between 1,000 and 1,500 j/kg CAPE. That's fairly high - especially at night. You can clearly see the areas contoured with the highest instability. Storms moving into these regions will produce heavy rain, intense lightning, and some winds over 50mph.
We have not seen much hail with the thunderstorms at all this evening. Dual-pol data from the Shelby County NEXRAD is indicating mainly very heavy rainfall. That's why we're seeing all green with the hydroclass product. Hail would be indicated on this graphic by red spots - which we're not seeing. Dual-pol is an incredible data tool for showing the difference between precipitation types.
Rest of tonight: As Meteorologist Wes Wyatt has been reporting, most storms will remain below severe weather limits, but some strong winds and heavy rainfall is likely through the overnight. It is possible we could see some localized flooding in some areas. Expect another round of showers and thunderstorms tomorrow and throughout much of the week. We're in for a fairly wet setup over the next 5-7 days.
Fox6 Chief Meteorologist