if you go to the link i posted be sure to click on the last page/post because the thread moves fast, also if you want to view the close up radar images you have to register(just a quick e-mail)
SPC just issued a rare “PDS’ tornado watch...they only issue this type of watch when they expect a tornado outbreak with strong tornadoes
GENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 132
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CDT FRI APR 10 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN ALABAMA
NORTHWEST GEORGIA
MIDDLE AND PARTS OF EASTERN TENNESSEE
EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1125 AM UNTIL 700
PM CDT.
..THIS IS A PARTICULARLY DANGEROUS SITUATION
DISCUSSION...LINE OF INTENSE SUPERCELLS EXPECTED TO CONTINUE TO
DEVELOP EWD ACROSS TN VLY AREA AND INTO NRN MIDDLE AND PARTS OF ERN
TN THROUGH THE AFTERNOON. AIRMASS AHEAD OF THIS LINE IS MODESTLY
UNSTABLE WITH MLCAPE VALUES INCREASING TO OVER 1500 J/KG ACROSS THE
TN VLY ATTM. GIVEN LITTLE CONVECTIVE INHIBITION AND MODEST TO STRONG
ASCENT WITHIN/BENEATH LEFT EXIST REGION OF 80KT MID LEVEL JET
STREAK...EXPECT STORMS TO CONTINUE TO MAINTAIN SEVERE INTENSITY
THROUGH THE AFTERNOON. OF PARTICULAR CONCERN IS MAGNITUDE OF
VERTICAL SHEAR...ESPECIALLY ACROSS NRN AL/SRN MIDDLE TN THIS
AFTERNOON. FCST HODOGRAPHS IN THIS CORRIDOR SUGGEST HIGH POSSIBILITY
OF A STRONG TORNADO IF DISCRETE CELLS CAN MOVE INTO THIS AREA AS
ANTICIPATED. FARTHER NORTH...ACROSS MIDDLE TN...TORNADO THREAT WILL
ALSO BE ENHANCED NEAR LINE/RETREATING WARM FRONTAL BOUNDARY NEXT FEW
HOURS.