

388 

WWUS20 KWNS 042007

SEL8

SPC WW 042007

TXZ000-050100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 548

NWS STORM PREDICTION CENTER NORMAN OK

310 PM CDT SAT JUL 4 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF THE PANHANDLE/NORTHWEST TEXAS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 310 PM UNTIL

800 PM CDT.



HAIL TO 1.5 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 55

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

CHILDRESS TEXAS TO 80 MILES SOUTH OF LUBBOCK TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 545...WW 546...WW 547...



DISCUSSION...REMNANT MCV AND ASSOCIATED MID LEVEL CONVECTIVE DEBRIS

IS SPREADING

ACROSS ECNTRL NM INTO THE WRN TX PANHANDLE.  ALONG THE LEADING EDGE

OF THIS THICKER CLOUD CANOPY THUNDERSTORMS HAVE RECENTLY

DEVELOPED...JUST OFF THE CAP ROCK FROM SE OF LBB TO WHEELER COUNTY.

SFC TEMPERATURES HAVE WARMED AOA 100F WITHIN VEERED...BUT MOIST LOW

LEVEL PRE-FRONTAL FLOW.  LATEST THINKING IS THIS ACTIVITY SHOULD

GRADUALLY EXPAND IN AREAL COVERAGE/INTENSITY OVER THE NEXT FEW

HOURS.  GIVEN THE LARGE TEMP/DEW POINT SPREADS IT APPEARS STRONG

WINDS WILL BE THE PRIMARY SEVERE THREAT.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 29015.





...CARBIN

