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000 

WWUS20 KWNS 031946

SEL9

SPC WW 031946

COZ000-NMZ000-OKZ000-TXZ000-040300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 339

NWS STORM PREDICTION CENTER NORMAN OK

145 PM MDT SUN JUN 3 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST COLORADO

       NORTHEAST NEW MEXICO

       THE WESTERN OKLAHOMA PANHANDLE

       THE WESTERN TEXAS PANHANDLE



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 900

PM MDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF

LA JUNTA COLORADO TO 35 MILES SOUTHEAST OF TUCUMCARI NEW MEXICO.

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 337...WW 338...



DISCUSSION...SCATTERED THUNDERSTORMS ARE GRADUALLY INTENSIFYING E OF

THE MOUNTAINS IN NE NM...AND OTHER STORMS WILL LIKELY DEVELOP DURING

THE NEXT FEW HOURS ALONG ENHANCED CUMULUS BANDS ACROSS SE CO AND THE

NW TX PANHANDLE.  SUFFICIENT INSTABILITY AND VERTICAL SHEAR IS

PRESENT FOR ORGANIZED MULTICELL CLUSTERS...AS WELL AS A FEW

SUPERCELLS.  LARGE HAIL WILL BE THE PRIMARY THREAT THIS

AFTERNOON...THOUGH THE DAMAGING WIND THREAT COULD INCREASE AS STORM

MERGERS LEAD TO THE FORMATION OF ONE OR MORE SMALL MCS/S BY LATE

AFTERNOON/EVENING AS THE CONVECTION SPREADS SEWD.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

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

MOTION VECTOR 32020.





...THOMPSON

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