999 
FXUS63 KUNR 072025
AFDRAP

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
300 PM MDT FRI MAY 7 1999

NOT MUCH GOING ON FIRST TWO PERIODS AS UPPER LEVEL RIDGE MOVES OVER 
THE AREA. WITH WEAK SURFACE GRADIENT WINDS WILL DROP OFF AROUND 
SUNSET. CUMULUS OVER EASTERN PART OF CWA WILL ALSO DISSIPATE...WITH 
CLEAR SKIES OVER ENTIRE CWA OVERNIGHT. WITH LOW DEWPOINTS OVER THE 
WEST...SHAVED A FEW DEGREES OFF OF MOS GUIDANCE. SUNNY/MOSTLY SUNNY 
SKIES FOR SATURDAY. GENERALLY FOLLOWED MOS HIGHS. 

MODELS BEYOND 24 HOURS FAIRLY CLOSE...AND GENERALLY WENT WITH THE 
AVN SOLUTION. PACIFIC FRONT PUSHES INTO NORTHEAST WYOMING/WESTERN 
SOUTH DAKOTA SATURDAY NIGHT/SUNDAY AS INITIAL SHORTWAVE MOVES 
THROUGH. ALL THREE MODESL BRING WAA/INCREASING UPWARD VERTICAL 
MOITION THROUGH SATURDAY NIGHT. INITIALLY LOW LEVEL MOISUTURE WILL 
BE LACKING...BUT MOISUTURE WILL INCREASE OVERNIGHT AS LEVEL JET 
CRANKS UP. AS SURFACE LOW DEVELOPS OVER NORTHEAST COLORADO/NEBRASKA 
PANHANDLE...EASTERLY UPSLOPE FLOW WILL ENHANCE PRECIPITATION OVER 
NORTHEAST WYOMING/WESTERN SOUTH DAKOTA. 

FOR THE EXTENDED...KEPT A CHANCE OF SHOWERS IN THE FORECAST FOR 
MONDAY/TUESDAY DUE TO THE PROXIMITY OF THE UPPER LEVEL TROF. 

.UNR...NONE.
CARSTENS