1030 AM CST Update from the SPC:

MID AND LOWER OH VALLEY SWD TO THE CENTRAL GULF COAST...
FEW CHANGES APPEAR NECESSARY ATTM TO THE PRIOR OUTLOOK AND
ASSOCIATED FORECAST REASONING. BROADLY...INCREASING LOW-LEVEL
MOISTURE COMBINED WITH MODEST HEATING WILL PERMIT GRADUAL WARM
SECTOR DESTABILIZATION...EXPANDING NWD ACROSS THE OH VALLEY THROUGH
LATE AFTERNOON AS THE SURFACE LOW SHIFTS NEWD. THIS DESTABILIZATION
IN CONJUNCTION WITH INCREASINGLY STRONG/VEERING FLOW WITH HEIGHT
AHEAD OF THE UPPER TROUGH WILL YIELD AN ENVIRONMENT SUPPORTIVE OF
DAMAGING WINDS AND TORNADOES -- INCLUDING A FEW STRONG/LONG-LIVED
TORNADIC SUPERCELLS.

PRESENCE OF CAPPING EVIDENT IN MORNING RAOBS CASTS UNCERTAINTY INTO
THE FORECAST WITH RESPECT TO TIMING OF THE INITIAL ONSET OF SEVERE
WEATHER. BANDS OF CONVECTION CONTINUE TO INCREASE ACROSS THE
LA/MS/WRN TN VICINITY AHEAD OF THE FRONT -- THOUGH LIKELY NOT YET
PURELY SURFACE-BASED. A BAND OF WEAK CONVECTION ALSO CONTINUES
INVOF THE FRONT...FROM SW OF STL SSWWD ACROSS THE OZARKS AND INTO
WRN LA. A GRADUAL INCREASE -- BOTH IN COVERAGE AND INTENSITY -- OF
ONGOING STORMS WILL CONTINUE...WITH A MIX OF BOTH DISCRETE AND
SEGMENTED LINEAR MODES ANTICIPATED. WITH STRONG LOW-LEVEL AND
DEEP-LAYER SHEAR PRESENT/INCREASING...DAMAGING WIND AND TORNADO RISK
IS LIKEWISE PROGGED TO EVOLVE/INCREASE THROUGH THE AFTERNOON AND
EVENING...WITH RISK LIKELY CONTINUING INTO THE OVERNIGHT HOURS FROM
ROUGHLY THE TN VALLEY SWD INTO THE CENTRAL GULF COAST STATES.