Tornado Watch Coming For Alabama

MESOSCALE DISCUSSION 2092
NWS STORM PREDICTION CENTER NORMAN OK
1057 PM CST MON NOV 29 2010

AREAS AFFECTED…WRN AND NRN AL

CONCERNING…SEVERE POTENTIAL…WATCH POSSIBLE

VALID 300457Z – 300630Z

TRENDS ARE BEING MONITORED FOR AN ADDITIONAL TORNADO WW…WHICH
COULD BECOME NECESSARY WITHIN THE NEXT HOUR OR TWO.

AN AREA OF STRONGER SURFACE PRESSURE FALLS ASSOCIATED WITH A WEAK
LOW/FRONTAL WAVE CONTINUES TO DEVELOP EAST NORTHEASTWARD ACROSS
NORTH CENTRAL MISSISSIPPI…TOWARD THE TENNESSEE VALLEY. THIS
FORCING HAS BEEN ACCOMPANIED BY PERSISTENT VIGOROUS CONVECTIVE
DEVELOPMENT THIS EVENING…INCLUDING TORNADIC AND POTENTIALLY
TORNADIC SUPERCELLS…WHICH APPEARS LIKELY TO CONTINUE INTO THE
PICKENS/LAMAR COUNTIES AREA OF WEST CENTRAL ALABAMA…THROUGH THE
HUNTSVILLE VICINITY DURING THE 06-09Z TIME FRAME. WHILE A NEAR
SURFACE STABLE LAYER LINGERS ACROSS THIS REGION…THE BOUNDARY LAYER
CONTINUES TO WARM AND MOISTEN IN ASSOCIATION WITH A RETREATING WARM
FRONT. IT APPEARS THAT LOW-LEVEL THERMODYNAMIC PROFILES MAY BECOME
SUPPORTIVE OF TORNADIC POTENTIAL OVERNIGHT… IN THE PRESENCE OF
LARGE CLOCKWISE CURVED LOW-LEVEL HODOGRAPHS AND STRONG DEEP LAYER
SHEAR.

..KERR.. 11/30/2010

ATTN…WFO…BMX…HUN…

Category: Severe Weather