167 
FXUS65 KCYS 281016
AFDCYS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
315 AM MST SUN MAR 28 2004

.SHORT TERM...SHORTWAVE TROUGH EXTENDING FROM CENTRAL MONTANA TO 
NORTHWEST WYOMING EARLY THIS MORNING WILL MOVE SOUTHEAST AND THROUGH
THE CWA TODAY.  SOME SNOW SHOWERS HAVE DEVELOPED AHEAD OF THE FEATURE
UNDER THE CURRENTLY COOLING CLOUD TOPS.  LATEST RUN OF THE ETA AND MM5
HAVE NOW COME INTO LINE WITH THE WETTER GFS AND SO HAVE INCREASED POPS
OVER THE ENTIRE CWA...ESPECIALLY THROUGH THE MORNING.  COOLER 
TEMPERATURES AT THE SURFACE AND 700 MB WILL MAKE MOST OF THE SHOWERS
IN THE FORM OF SNOW IN THE MORNING...THEN A MIX IN THE AFTERNOON.  IN
ADDITION...STEEP LAPSE RATES EXPECTED FOR THIS AFTERNOON MAY YIELD
SOME LATE MORNING AND AFTERNOON THUNDERSTORMS.  TEMPERATURES WILL BE
A BIT COOLER TODAY THAN THOSE OF SATURDAY AS 700 MB TEMPERATURES WILL
BE SLIGHTLY LOWER.  IT WILL ALSO BE ANOTHER WINDY DAY ACROSS THE CWA
WITH WINDS APPROACHING WIND ADVISORY CRITERIA IN THE WESTERN NEBRASKA
PANHANDLE.  THE WEATHER QUIETS TONIGHT AS SURFACE HIGH PRESSURE BUILDS
OVER THE CWA AND HEIGHTS ALOFT START TO RISE. 
  
.LONG TERM...UPPER RIDGING PREVAILS MON-WED BUT WARMING WILL BE SLOWED BY 
NORTHERLY FLOW ALOFT. GREAT BASIN UPPER TROF APPROACHES ON THU SO WILL SEE
AN INCREASE IN HIGH CLOUDS. PREVIOUS FORECAST HAD PRECIPITATION BEGINNING THU 
NIGHT WHICH LOOKS GOOD BASED ON 28/00Z GFS RUN SO HAVE MADE NO CHANGES TO 
PRECIPITATION GRIDS THU NIGHT-SAT. COOLER FRI/SAT AS THICKNESSES COOL AND 
CLOUDS INCREASE.

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...NONE.
NE...NONE.

WEILAND/RUBIN