786 
FXUS65 KCYS 282230
AFDCYS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
430 PM MDT THU MAR 28 2013

.SHORT TERM...(TONIGHT THROUGH SATURDAY NIGHT)
ISSUED AT 413 PM MDT THU MAR 28 2013

RATHER QUIET WEATHER EXPECTED TONIGHT WITH JUST A FEW LIGHT
SHOWERS CURRENTLY OVER THE HIGH MOUNTAINS SO FAR THIS AFTERNOON.
A FEW MORE MAY FORM THE REST OF THIS AFTERNOON AS WELL AS DRIFT
INTO WESTERN PARTS OF CARBON COUNTY THROUGH THIS EVENING OTHERWISE
DRY CONDITIONS EXPECTED ACROSS THE REST OF THE CWA TONIGHT. WEAK
RIDGING ALOFT WILL PERSIST TO THE WEST OF THE CWA FRIDAY WITH SOME
AMPLIFICATION OF THE WESTERN RIDGE SATURDAY ALLOWING FOR NWLY FLOW
TO SET UP ACROSS THE CWA. WEAK IMPULSE SHOULD CROSS THE AREA
FRIDAY AND SHOULD BRING ABOUT A BETTER COVERAGE OF SHOWERS FOR THE
CWA FRIDAY AFTERNOON INTO EARLY EVENING. A BIT MORE INSTABILITY
WILL ALSO ALLOW FOR A BETTER CHANCE FOR A FEW WEAK STORMS MAINLY
OVER THE SOUTHERN HALF OF THE CWA. TEMPERATURES WILL BE QUITE
MILD FRIDAY THEN A BIT COOLER SATURDAY AS A MODEST COOL FRONT
DROPS SOUTHEAST ACROSS THE CWA DURING THE AFTERNOON. SCTD SHOWERS
EXPECTED TO DEVELOP BEHIND THIS FRONT AS SFC UPSLOPE FLOW DEVELOPS
SATURDAY WITH CLEARING SATURDAY EVENING.

.LONG TERM...(SUNDAY THROUGH WEDNESDAY)
ISSUED AT 413 PM MDT THU MAR 28 2013

ANOTHER WARM DAY ON SUNDAY ESPECIALLY ACROSS SOUTHERN ZONES OUT
AHEAD OF THE COLD FRONT. STRONG SFC HIGH PRESSURE BUILDS INTO THE
NORTHERN PLAINS ON SUNDAY AFTN FORCING A COLD FRONT ACROSS THE CWA
FROM THE AFTERNOON INTO THE NIGHT. LLVL EASTERLY UPSLOPE WILL
COMBINE WITH INCREASING MOISTURE FROM A CLOSED LOW ACROSS UTAH TO
PRODUCE A CHANCE OF SNOW ON SUNDAY NIGHT AND EARLY MONDAY. THE
MODELS SHOW WIDESPREAD LIGHT QPF THAT COULD RESULT IN A FEW INCHES
OF SNOW. LLVL OMEGA IN THE UPSLOPE IS GOOD...HOWEVER THE MID-TO-
UPPER LEVEL UPWARD MOTION IS SOMEWHAT LACKING...SO LIKE THE
MODELS DEPICTION OF GENERALLY LIGHT AMOUNTS. TEMPS SHOULD BE QUITE
A BIT COLDER (AROUND 15-20 DEGREES) ON MONDAY IN THE POST FRONTAL
AIRMASS AND ABUNDANT CLOUD COVER. HEIGHTS RISE ON TUESDAY WITH
INCREASING WARM AIR ADVECTION AS THE SFC HIGH SLIDES EASTWARD INTO
NEBRASKA. COULD BE EVEN WARMER ON WEDNESDAY AS FLOW ALOFT BECOMES
MORE ZONAL IN COMBINATION WITH BETTER SFC TROUGHING AND DOWNSLOPE
WESTERLY WINDS ACROSS THE PLAINS.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z FRIDAY AFTERNOON)
ISSUED AT 1132 AM MDT THU MAR 28 2013

VFR CONDITIONS THROUGH THE TAF PERIOD. SOME VFR CIGS WITH BASES
7-10 FT AGL COULD DEVELOP THIS AFTERNOON ESPECIALLY IN THE
SOUTHERN SITES. ISOLATED SHOWERS COULD ALSO BE POSSIBLE THIS AFTN
AT KCYS. WINDS WILL GENERALLY REMAIN BELOW 10-15 KTS THROUGH THE
PERIOD.

&&

.FIRE WEATHER...
ISSUED AT 413 PM MDT THU MAR 28 2013

NO CONCERNS SEEN THROUGH THE WEEKEND WITH WEATHER CONDITIONS
EXPECTED TO REMAIN NON-CRITICAL. WEAK COOL FRONT WILL PASS ACROSS
THE AREA LATE SATURDAY WITH A STRONGER COLD FRONT DROPPING SOUTH
OVER THE PLAINS SUNDAY AFTERNOON AND EVENING.

&&

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

$$

SHORT TERM...RE
LONG TERM...FINCH
AVIATION...FINCH
FIRE WEATHER...RE