

567 

WWUS20 KWNS 051946

SEL1

SPC WW 051946

COZ000-NMZ000-060200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 551

NWS STORM PREDICTION CENTER NORMAN OK

145 PM MDT SUN JUL 5 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST COLORADO

       NORTHEAST NEW MEXICO



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 800

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 55

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES WEST

NORTHWEST OF LIMON COLORADO TO 60 MILES EAST SOUTHEAST OF LAS

VEGAS NEW MEXICO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 550...



DISCUSSION...NUMEROUS STORMS DEVELOPING ACROSS THE HIGHER TERRAIN

AND ADJACENT PLAINS WILL TAP RELATIVELY RICH BOUNDARY LAYER MOISTURE

AND WARMING AIRMASS TO RESULT IN STOUT STORM UPDRAFTS WITH HEAVY

RAIN AND HAIL THIS AFTERNOON. BELT OF SLIGHTLY STRONGER WLY

MID-LEVEL FLOW /AROUND 30 KT/ COUPLED WITH WEAK LOW LEVEL SELY FLOW

WILL RESULT IN ADEQUATE SR SHEAR FOR A FEW PERSISTENT ROTATING

STORMS CAPABLE OF LARGE HAIL PRODUCTION. AS STRONGER CELLS

MOVE/DEVELOPS OVER WARMER BOUNDARY LAYER EAST OF THE MOUNTAINS...A

COUPLE OF DAMAGING WIND EVENTS ALSO APPEAR POSSIBLE.



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 450. MEAN STORM

MOTION VECTOR 32015.





...CARBIN

