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906 

WWUS20 KWNS 092331

SEL6

SPC WW 092331

COZ000-KSZ000-NEZ000-100700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 596

NWS STORM PREDICTION CENTER NORMAN OK

530 PM MDT MON AUG 9 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEASTERN COLORADO

       NORTHWESTERN KANSAS

       WESTERN NEBRASKA



EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 530 PM

UNTIL 100 AM 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 100

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTHEAST OF

GOODLAND KANSAS TO 50 MILES NORTH OF MULLEN NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 595...



DISCUSSION...TSTMS EXPECTED TO INCREASE IN COVERAGE/INTENSITY ACROSS

PARTS OF THE CNTRL HI PLNS THIS EVE THROUGH EARLY TUE.  THIS WILL

OCCUR AS MOIST LOW LVL ELY FLOW SLIGHTLY STRENGTHENS BENEATH AREA OF

ASCENT ASSOCIATED WITH UPR IMPULSE MOVING NNE FROM ERN CO...IN

TANDEM WITH STRONGER UPR IMPULSE IN UT.  DEGREE OF SBCAPE AND STEEP

LOW LVL LAPSE RATES SUGGEST POTENTIAL FOR SVR HAIL/WIND DESPITE

MODEST/WEAKLY ORGANIZED WIND FIELD.  A TORNADO OR TWO CANNOT BE

RULED OUT.  THE LOCATION OF ANY SUCH EVENT WILL... HOWEVER...

REQUIRE ASSISTANCE FROM LOW LVL MESOSCALE FORCING MECHANISMS THAT

ATTM REMAIN UNCERTAIN WITH RESPECT TO LOCATION/LONGEVITY/STRENGTH.



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 550. MEAN STORM

MOTION VECTOR 21030.





...CORFIDI

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