

650 

WWUS20 KWNS 290226

SEL6

SPC WW 290226

TXZ000-290900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 206

NWS STORM PREDICTION CENTER NORMAN OK

925 PM CDT TUE APR 28 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST CENTRAL AND NORTHWEST TEXAS INCLUDING THE PANHANDLE



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 925 PM

UNTIL 400 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 85

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

SOUTHEAST OF LUBBOCK TEXAS TO 55 MILES NORTH OF BORGER TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 205...



DISCUSSION...ISOLATED STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE

INCREASING IN COVERAGE AND INTENSIFY ACROSS WW THROUGH THE LATE

EVENING ALONG NOSE OF SLY LLJ.  AIRMASS IS MODERATELY

UNSTABLE...ALTHOUGH LIFTED-PARCELS WILL LIKELY REMAIN SOMEWHAT

ELEVATED...WITH SUFFICIENT SHEAR FOR SUPERCELLS.  ACTIVITY WILL

LIKELY COALESCE INTO ONE OR TWO CLUSTERS/MCSS INTO THE EARLY MORNING

HOURS.  LARGE HAIL WILL BE PRIMARY SEVERE THREAT...ALTHOUGH ISOLATED

DAMAGING WINDS MAY OCCUR WITH STORMS ROOTED CLOSE TO THE SURFACE.



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 24025.





...EVANS

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