SUMMARY…Several supercells have developed between Jackson and Columbus, MS. These supercells are expected to strengthen through the afternoon.
DISCUSSION…Several supercells have started to exhibit moderate mid-level rotation between Jackson and Columbus, MS. Low-level rotation in the appendages of these supercells have been noticeably absent for the past hour. This is likely due to lower instability farther north (500 to 750 J/kg MLCAPE near Columbus) and lower low-level shear farther south (125 m2/s2 0-1 SRH at DGX VWP). Through the afternoon, instability is expected to increase to 1000 to 1500 J/kg ahead of these storms as they move east into an environment with over 300 m2/s2 0-1 SRH via GWX VWP. As the tornadic environment becomes more favorable through the afternoon, expect low-level rotation to start to organize with an increasing tornado threat.
