
CONCERNING THE SEVERE THREAT...A 100 KT MID-LEVEL JET OVER THE MID
MS VALLEY WILL MOVE NEWD ACROSS THE TN AND OH VALLEYS CREATING
STRONG VERTICAL SHEAR PROFILES ACROSS THE REGION. LIFT WILL BE
ENHANCED FROM THE RIGHT REAR QUADRANT OF THE JET ACROSS THE TN
VALLEY AND THIS ALONG WITH THE STRONG SHEAR WILL SUPPORT A SEVERE
THREAT WITH THE SQUALL-LINE. FORECAST SOUNDINGS AHEAD OF THE
SQUALL-LINE THIS AFTERNOON SHOW IMPRESSIVE LOW-LEVEL SHEAR PROFILES
WITH ABOUT 50 KT AT 850 MB AND RESULTANT 0-1 KM SHEAR VALUES AROUND
30 KT. THIS SHOULD BE FAVORABLE FOR TORNADOES WITH SUPERCELLS AHEAD
OF THE LINE AND PERSISTENT ROTATING STORMS EMBEDDED IN THE LINE
. IF
SUPERCELLS INITIATE EAST OF THE SQUALL-LINE...THEN AN ISOLATED
STRONG TORNADO OR TWO MAY OCCUR ACROSS SRN AND CNTRL AL. A POTENTIAL
FOR WIND DAMAGE AND HAIL WILL LIKELY EXIST AT THE BEGINNING OF THE
PERIOD AND PERSIST THROUGH THIS EVENING AS THE SQUALL-LINE ADVANCES
EWD ACROSS THE REGION. THE SEVERE THREAT SHOULD BE GREATEST ACROSS
SRN AND CNTRL AL IN THE EARLY TO MID AFTERNOON WHEN INSTABILITY WILL
BE MAXIMIZED WITH THE THREAT CONTINUING EWD INTO WRN GA BY EARLY
THIS EVENING.