

000 

WWUS20 KWNS 191850

SEL8

SPC WW 191850

COZ000-KSZ000-NMZ000-OKZ000-TXZ000-200200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 578

NWS STORM PREDICTION CENTER NORMAN OK

150 PM CDT THU JUN 19 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST COLORADO

       PARTS OF SOUTHWEST KANSAS

       PARTS OF NORTHEAST NEW MEXICO

       PARTS OF OKLAHOMA PANHANDLE

       MUCH OF TEXAS PANHANDLE



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 150 PM UNTIL

900 PM CDT.



HAIL TO 3 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 120

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

JUNTA COLORADO TO 70 MILES SOUTHEAST OF TUCUMCARI NEW MEXICO.

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 577...



DISCUSSION...THUNDERSTORMS WILL INCREASE/INTENSIFY ALONG SEVERAL

BOUNDARIES AS WELL AS HIGHER TERRAIN ACROSS THE WATCH AREA.  WITH

30-40KT OF DEEP LAYER SHEAR...STEEP MID LEVEL LAPSE RATES AND MDT

INSTABILITY...SUPERCELLS ARE LIKELY...EVOLVING INTO SHORT LINE

SEGMENTS/BOWS BY LATE AFTERNOON. PRIMARY THREAT WILL BE VERY LARGE

HAIL AND DAMAGING WINDS.



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

TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 33020.





...HALES

