

603 

WWUS20 KWNS 112215

SEL1

SPC WW 112215

ALZ000-KYZ000-TNZ000-120500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 131

NWS STORM PREDICTION CENTER NORMAN OK

510 PM CDT MON APR 11 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN ALABAMA

       SOUTHERN AND EASTERN KENTUCKY

       MIDDLE AND EAST TENNESSEE



EFFECTIVE THIS MONDAY AFTERNOON FROM 510 PM UNTIL MIDNIGHT CDT.



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 60 STATUTE

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

JACKSON KENTUCKY TO 40 MILES SOUTHWEST OF HUNTSVILLE ALABAMA.

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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 128...TORNADO WATCH NUMBER 129. WATCH NUMBER 128 129

WILL NOT BE IN EFFECT AFTER 510 PM CDT. CONTINUE...WW 130...



DISCUSSION...TSTMS...INCLUDING A FEW SUSTAINED STORMS/POSSIBLE

SUPERCELLS...EXPECTED TO CONTINUE MOVING NEWD ALONG AND W OF

SLOWLY-PROGRESSIVE SSW-NNE  QLCS IN WRN PART OF WW.  WARM LAYER

ALOFT /PER 18Z JACKSON MS RAOB/ LIKELY HAS KEPT MOST ACTIVITY

SLIGHTLY ELEVATED TO THIS POINT IN TIME.  BUT ARRIVAL OF STRONGER

FORCING FOR ASCENT IN THE FORM OF LEFT EXIT REGION OF SRN PLNS/LWR

MS VLY UPR JET MAY SUPPORT STRONGER...MORE NEARLY SFC-BASED STORMS

THROUGH MID EVE.  GIVEN STRENGTH AND CHARACTER OF WIND PROFILES...

SETUP MAY YIELD LEWPS WITH BOTH DMGG WIND AND POSSIBLE

TORNADOES...IN ADDITION TO MARGINALLY SVR HAIL.



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 450.

MEAN STORM MOTION VECTOR 23045.





...CORFIDI

