

870 

WWUS20 KWNS 062039

SEL5

SPC WW 062039

COZ000-070300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 695

NWS STORM PREDICTION CENTER NORMAN OK

240 PM MDT WED OCT 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN COLORADO



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 240 PM UNTIL

900 PM 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 30

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH OF

GRAND JUNCTION COLORADO TO 20 MILES SOUTH SOUTHEAST OF CORTEZ

COLORADO.  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 694...



DISCUSSION...LARGE SCALE FORCING WILL SPREAD INTO WRN CO DURING THE

NEXT COUPLE OF HOURS AS UPPER SHORTWAVE TROUGH APPROACHES AREA.

TEMPERATURES HAVE WARMED INTO THE MID/UPPER 70S AND WITH DEWPOINTS

HOLDING IN THE MID 40S...MLCAPES ARE BETWEEN 500-1000 J/KG.

EFFECTIVE DEEP LAYER SHEAR AT 40-50 KT WILL SUPPORT SUPERCELLS/SMALL

BOWS WITH A THREAT FOR SEVERE HAIL AND WIND DAMAGE.



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 21035.





...IMY

