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913 

WWUS20 KWNS 272303

SEL5

SPC WW 272303

COZ000-KSZ000-NMZ000-OKZ000-TXZ000-280600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 655

NWS STORM PREDICTION CENTER NORMAN OK

500 PM MDT THU SEP 27 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST COLORADO

       SOUTHWEST KANSAS

       NORTHEAST NEW MEXICO

       WESTERN OKLAHOMA PANHANDLE

       NORTHERN TEXAS PANHANDLE



EFFECTIVE THIS THURSDAY AFTERNOON FROM 500 PM UNTIL MIDNIGHT MDT.



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 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES SOUTH

SOUTHWEST OF LA JUNTA COLORADO TO 45 MILES NORTH NORTHEAST OF

GUYMON OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 654...



DISCUSSION...AN UPPER LEVEL DISTURBANCE ACROSS CO WILL CONTINUE TO

PROVIDE ASCENT AND A FAVORABLE ENVIRONMENT FOR STRONG TO SEVERE

TSTMS ACROSS THE SERN CO AND ADJACENT NERN NM THIS EVENING. MOIST

LOW LEVEL ELY/UPSLOPE FLOW WAS ALSO AIDING STORM DEVELOPMENT ACROSS

THE HIGHER TERRAIN AND MOST GUIDANCE SUGGESTS THAT ONE OR TWO SMALL

TSTM CLUSTERS WILL GROW UPSCALE AND DEVELOP SEWD ACROSS SERN CO AND

INTO PARTS OF SWRN KS AS WELL AS PORTIONS OF THE TX/OK PNHDLS

THROUGH LATE EVENING AND OVERNIGHT. IN ADDITION TO SOME INCREASE IN

STRONG/DAMAGING WIND THREAT WITH THIS ACTIVITY...A BELT OF STRONGER

MID LEVEL FLOW ON THE ORDER OF 30-40KT ACROSS THE CO/NM BORDER AREA

WILL PROVIDE SUFFICIENT SHEAR FOR UPDRAFT PERSISTENCE AND A CHANCE

FOR LARGE HAIL.



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 400. MEAN STORM

MOTION VECTOR 28030.





...CARBIN

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