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WWUS20 KWNS 132306

SEL2

SPC WW 132306

TXZ000-140600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 162

NWS STORM PREDICTION CENTER NORMAN OK

605 PM CDT FRI APR 13 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN TEXAS PANHANDLE



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 605 PM

UNTIL 100 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES EAST

NORTHEAST OF AMARILLO TEXAS TO 50 MILES EAST SOUTHEAST OF

PLAINVIEW TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 160...WW 161...



DISCUSSION...TSTMS DEVELOPING ALONG WARM FRONT/DRYLINE RETREATING

NWWD ACROSS REGION ARE DOING SO IN AN ENVIRONMENT CHARACTERIZED BY

MLCAPE OF 2000-2500 J/KG AND 50 KT OF EFFECTIVE BULK SHEAR.  AS

SUCH...POTENTIAL WILL EXIST FOR SUPERCELL EVOLUTION WITH AN

ATTENDANT RISK OF LARGE HAIL AND DAMAGING WINDS.  INCREASING

LOW-LEVEL MOISTURE AND NEAR GROUND SHEAR IS ANTICIPATED ACROSS THE

ERN PNHDL LATER THIS EVENING INTO TONIGHT...SIGNALING A HEIGHTENED

TORNADO RISK.  THUS...CONDITIONS WILL BE MONITORED FOR A POSSIBLE

UPGRADE TO A TORNADO WATCH IN THE 14/00-03Z TIME FRAME.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25025.





...MEAD

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