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000
FXUS65 KCYS 082153
AFDCYS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
253 PM MST SUN DEC 8 2013

.SHORT TERM...(THIS EVENING THROUGH TUESDAY NIGHT)
ISSUED AT 240 PM MST SUN DEC 8 2013

CLOUDS HAVE CLEAR OUT BEHIND THE SHORTWAVE WHICH MOVED OUT OF
COLORADO AND INTO PLAINS. NEXT BATCH OF CLOUDS IS NOW MOVING INTO
WESTERN PORTIONS OF THE CWA AS ANOTHER WAVE DIGS SOUTH OUT OF THE
NORTHERN ROCKIES. THE NEXT SHOT OF ARCTIC AIR WILL ACCOMPANY THIS
THE WAVE. AFTER WARMING INTO THE SINGLE DIGITS OVER MUCH OF THE
AREA TODAY...SUBZERO READINGS WILL AGAIN PUSH ACROSS THE AREA
TONIGHT. THE COMBINATION OF NORTHWEST WINDS AND COLD TEMPERATURES
WILL PUSH WIND CHILL VALUES WELL BELOW ZERO TONIGHT...WITH WIND
CHILLS GENERALLY DROPPING TO MINUS 20 TO MINUS 30. A WIND CHILL
ADVISORY HAS BEEN ISSUED FOR THE NEBRASKA PANHANDLE FOR TONIGHT.

CHANCES FOR MEASURABLE SNOW THE NEXT SEVERAL DAYS WILL BE ON THE
LOW SIDE. UPPER LEVEL ENERGY MOVING ACROSS THE AREA TONIGHT MAY
PRODUCE SOME LIGHT SNOW SHOWERS OR SNOW FLURRIES WITH THE MAIN
POTENTIAL OVER THE MOUNTAINS. NOT ANTICIPATING ANY SNOW EAST OF
THE LARAMIE RANGE...AT LEAST NOTHING MORE THAN A FEW FLURRIES.
ONCE THE WAVE PASSES CHANCES FOR SNOW WILL SHUT DOWN FOR TOMORROW.
A QUICK MOVING CLIPPER SYSTEM WILL MOVE ACROSS THE AREA LATE
TUESDAY AFTERNOON INTO TUESDAY NIGHT. THIS COULD BRING ANOTHER
BRIEF SHOT OF LIGHT SNOW BUT ANY ACCUMULATIONS WILL BE MINIMAL.

WARMING TREND WILL START TOMORROW AS WESTERLY WINDS KICK IN.
SHOULD SEE HIGHS BACK INTO THE 20S AND 30S OVER MOST OF THE AREA
TUESDAY. ALONG WITH THE WARMER TEMPERATURES COMES THE STRONGER
WINDS. HIGH WIND WATCHES REMAIN IN PLACE FOR LATE MONDAY INTO
TUESDAY. WIND PRONE PORTIONS OF SOUTHEAST WYOMING IS THE MAIN AREA
OF CONCERN WHERE GUSTS MAY REACH 60 MPH OR POSSIBLY GREATER. ALONG
WITH THE STRONG WINDS COULD SEE SOME BLOWING SNOW WHERE THERE IS
DEEPER SNOW PACK ON THE GROUND.


.LONG TERM...(WEDNESDAY THROUGH SUNDAY)
ISSUED AT 240 PM MST SUN DEC 8 2013

MAINLY DRY WEATHER EXPECTED OVER THE CWA DURING THIS PERIOD
OUTSIDE OF THE HIGHER MTNS WHERE SOME SNOW SHOWERS ARE POSSIBLE
LATER IN THE PERIOD. A SFC HIGH WILL SLIDE SE OVER THE NORTHERN
PLAINS INTO THE UPPER MISSISSIPPI VALLEY TUESDAY NIGHT AND WEDS
AND BRING A GLANCING SHOT OF COOLER AIR TO THE CWA PLAINS EAST OF
THE MTNS FOR WEDS. WARMER THURSDAY AND CONTINUED MILD FRIDAY AS AN
UPPER RIDGE MOVES ACROSS. A SPLITTING UPPER TROF WILL MOVE ONSHORE
OVER THE WEST COAST AND ACROSS THE ROCKY MTNS FRIDAY AND SATURDAY
WITH THE CWA BASICALLY IN BETWEEN THE TWO BATCHES OF ENERGY.
ASSOCIATED PACIFIC FRONT WITH THIS SYSTEM SHOULD SLIDE ACROSS
SATURDAY BRINGING MODESTLY COOLER AIR.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z MONDAY EVENING)
ISSUED AT 240 PM MST SUN DEC 8 2013

VFR CONDITIONS EXPECTED ACROSS THE REGION THROUGH THE PERIOD
THOUGH A FEW PERIODS OF MVFR CIGS STILL POSSIBLE AROUND KRWL
THIS EVENING. WINDS WILL INCREASE MONDAY MORNING OVER SOUTHEAST
WYOMING WITH GUSTS OVER 40 MPH POSSIBLE AROUND THE MTNS.

&&

.FIRE WEATHER...
ISSUED AT 408 AM MST SUN DEC 8 2013

SEVERAL PASSING DISTURBANCES ALONG WITH THE COLD AIR MASS WILL
KEEP FIRE WEATHER CONCERNS AT BAY THROUGH EARLY NEXT WEEK. WILL
SEE PERIODIC LIGHT SNOW CHANCES THROUGH THE PERIOD...ALTHOUGH ANY
ACCUMULATIONS WILL REMAIN VERY LIGHT. A WINDY PERIOD WILL SET UP
FOR MONDAY AFTERNOON THROUGH TUESDAY MAINLY ACROSS THE TYPICALLY
WINDY AREAS OF SOUTHEAST WYOMING. WARMER TEMPERATURES WILL BE ON
THE WAY AS WELL...WITH AFTERNOON HIGHS RETURNING TO NORMAL BY MID-
WEEK.


&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...HIGH WIND WATCH FROM LATE MONDAY NIGHT THROUGH TUESDAY AFTERNOON
     FOR WYZ116-117.

     HIGH WIND WATCH FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON
     FOR WYZ106-110.

NE...WIND CHILL ADVISORY FROM 6 PM THIS EVENING TO 9 AM MST MONDAY
     FOR NEZ002-003-019>021-054-055-095-096.

&&

$$

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