Multiple supercell storms have developed over Mississippi over the past 2 hours, and there are three tornado warnings in effect. At least one, possibly large, tornado has been confirmed with the storm near Philadelphia, MS, and there may be other tornadoes on the ground. These storms are moving NE and may affect Sumter, Pickens, and Lamar Counties in Alabama by 6 pm.
These storms are occurring in an environment with helicity only near 200 m2/s2 and CAPE near 700 J/kg, about what we have here. As the upper-level system causes pressure falls to our west, expect the low-level wind field to increase this evening, causing even higher wind shear, so any storms that form, especially these out ahead of the main line, will likely rotate and have the potential to produce tornadoes.
Headed into the Fox 6 studios momentarily, but I will be blogging through the night.
Dr. Tim Coleman