

087 

WWUS20 KWNS 200643

SEL5

SPC WW 200643

TNZ000-201400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 165

NWS STORM PREDICTION CENTER NORMAN OK

245 AM EDT WED APR 20 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN TENNESSEE



EFFECTIVE THIS WEDNESDAY MORNING FROM 245 AM UNTIL 1000 AM EDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH OF KNOXVILLE

TENNESSEE TO 35 MILES WEST OF CHATTANOOGA TENNESSEE.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU5).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 157...WW 159...WW

160...WW 161...WW 162...WW 163...WW 164...



DISCUSSION...SRN END OF KY/MIDDLE TN SQLN WILL CONTINUE ENEWD INTO E

TN THROUGH LATER THIS MORNING.  COMBINATION OF RISING TERRAIN AND

CONTINUED EWD SPREAD OF MOISTURE ALONG 50-60 KT SWLY LLJ SHOULD

MAINTAIN STRENGTH OF EMBEDDED STORMS...AND ATTENDANT THREAT FOR DMGG

WIND AND ISOLD TORNADOES.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 25040.





...CORFIDI

