000 
TTAA00 KBIL 140914

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
200 AM MST SAT DEC 14 1996

SNOW WINDING DOWN ACROSS SC MT...BUT IS CONTINUING ACROSS SE MT AS
VORT MAX MOVES THROUGH CNTRL WY.  THERE IS MORE ENHANCEMENT TO THE W
OF BIL...ASSOCIATED WITH SHORTWAVES IN SW AND SC MT...BUT NOTHING
FALLING UNDERNEATH THE ENHANCEMENT...WITH BZN AND LVM REPORTING OVC
SKIES.  MODELS BRING ANOTHER SHOT OF UVV'S ACROSS SC MT LATER THIS
MORNING...AS A SHORTWAVE TROUGH MOVES OVER...BUT WITH DRYING TAKING
PLACE UPSTREAM...THERE SHOULD ONLY BE SOME SCT -SN DURING THE
MORNING...WITH SKIES CLEARING DURING THE AFTERNOON. WILL KEEP HIGH
POPS ACROSS SE MT TODAY...HIGHEST IN BHK...BUT ACTIVITY SHOULD END BY
EARLY AFTERNOON...WITH CLEARING BY EVENING.

THINGS BECOMING INTERESTING TONIGHT AND SUNDAY...AS STRONG SHORTWAVE
LOCATED NEAR 50N 145W MOVES OVER THE TOP OF AMPLIFYING ERN PACIFIC
RIDGE. MODELS PLACE STRONG HIGH PRESSURE (1045-1050MB) OVER SW WY BY
SUNDAY AM.  AT THE SAME TIME...LOW PRESSURE WILL DEVELOP ACROSS CNTRL
ALBERTA...WHICH WILL CREATE A LARGE PRESSURE GRADIENT ACROSS
MT...ESPECIALLY ALONG THE E SLOPES.  AGREE WITH HWW ACROSS E SLOPES.
ETA/AVN ARE IN GOOD AGREEMENT WITH PLACEMENT OF PAC SHORTWAVE BY
00Z/16...PLACING IT IN SRN ALBERTA.  MODELS DIFFER SOMEWHAT ON
PLACEMENT OF ARCTIC FRONT...WITH THE AVN FASTEST...PUSHING IT THROUGH
SRN MT SUN EVENING. THE PLACEMENT OF THE FRONT HAS A LARGE BEARING ON
POPS FOR SUNDAY. MODELS ALL BRING MOISTURE AND GOOD PVA AHEAD OF FRONT
INTO SRN MT SUN AFTERNOON...AND ALSO SHOW A WARM POCKET OF AIR OVER SC
MT SUN AFTERNOON...ASSOCIATED WITH GUSTY W TO SW WINDS. WILL GO WITH
SCT POPS FOR SUNDAY...BUT THIS WILL HAVE TO BE MONITORED BY DAY SHIFT 
AS SPEED OF MOISTURE AND FRONT BECOME CLEARER. WILL GO COOLER THAN
GUIDANCE TODAY...BUT CLOSE ON SUN AS TEMPS SHOULD REBOUND AHEAD STRONG
ARCTIC FRONT. VAN AUSDALL

BIL BE 029/019 039/017 017 59304
LVM .. 034/020 042/... ... 59304
HDN .. 031/015 040/... ... 59303 
MLS .. 028/010 037/... ... 59602
4BQ .. 030/010 040/... ... 59602
BHK .. 027/007 036/... ... 59802
SHR EB 030/005 040/020 020 59602