

670 

WWUS20 KWNS 101357

SEL1

SPC WW 101357

KYZ000-TNZ000-102100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 131

NWS STORM PREDICTION CENTER NORMAN OK

855 AM CDT FRI APR 10 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN KENTUCKY

       WESTERN AND MIDDLE TENNESSEE



EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 855 AM UNTIL 400

PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF BOWLING

GREEN KENTUCKY TO 45 MILES SOUTH SOUTHEAST OF JACKSON TENNESSEE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



DISCUSSION...STRONG LOW PRESSURE WILL TRACK EAST TO THE LWR OH VLY

THROUGH THE DAY WITH COLD FRONT SWEEPING EWD ACROSS WRN/MIDDLE TN

AND WRN KY. STORMS ALREADY DEVELOPING AND INCREASING ALONG THE

ADVANCING COLD FRONT AND WILL MOVE INTO INCREASINGLY UNSTABLE

AIRMASS. VERY STRONG LOW LEVEL SHEAR IN PLACE ACROSS THE AREA OF THE

WATCH WITH MEMPHIS VWP INDICATING 70-75KT OF FLOW AT 2KM AGL.

THUS...EXPECT STORMS TO BECOME INCREASINGLY ORGANIZED WITH LINE

SEGMENTS AND SUPERCELLS MOVING AT OVER 40KT. TORNADO THREAT WILL

EXIST NEAR BREAKS IN THE LINE AND ALONG/NEAR RESIDUAL BOUNDARY/WARM

FRONT ACROSS SECTIONS OF WRN/MIDDLE TN NEXT FEW HOURS. VERY LARGE

HAIL AND HIGH WINDS ALSO LIKELY AS CONVECTION MATURES AND TAPS

GREATER INSTABILITY.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

450. MEAN STORM MOTION VECTOR 26040.





...CARBIN

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