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930 

WWUS20 KWNS 160142

SEL9

SPC WW 160142

TXZ000-160700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 399

NWS STORM PREDICTION CENTER NORMAN OK

840 PM CDT FRI JUN 15 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST TEXAS



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 840 PM

UNTIL 200 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

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

NORTHWEST OF CHILDRESS TEXAS TO 65 MILES SOUTHEAST OF LUBBOCK

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 395...WW 397...WW 398...



DISCUSSION...LACK OF LARGER SCALE FLOW/SUPPORT FOR ORGANIZED STORMS

APPEARS TO HAVE BEEN COMPENSATED TO SOME EXTENT BY

STRENGTH/MAGNITUDE OF INSTABILITY AND STORM-SCALE INTERACTIONS TO

SUPPORT THE EVENING INCREASE IN STORMS NOW COMING INTO WEST TX. ARC

OF INTENSE CONVECTION HAS ALREADY PRODUCED SEVERE WINDS IN COCHRAN

COUNTY AND ADDITIONAL CELLS ARE NOW DEVELOPING ALONG SUBTLE WIND

SHIFT AXIS IN TERRY AND LYNN COUNTIES. EXPECT THE THREAT FOR

DAMAGING WINDS TO SPREAD EWD IN THE NEXT FEW HOURS GIVEN STRENGTH OF

ONGOING CONVECTION FAVORABLY ORIENTED TO INSTABILITY AXIS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 27030.





...CARBIN

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