Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 262155

Area Forecast Discussion
National Weather Service Billings MT
255 PM MST Sun Feb 26 2017

.SHORT TERM...valid for Mon and Tue...

This afternoon some light snow showers continued from Lewistown
down to Hardin. This activity is mainly associated with some
instability from the Snowy Mountains. As the main trough moves
into the area more stratiform snow will take over. Both the high
resolution short term models and the larger scale models continue
to track a jet streak over southern Montana. This places the left
exit region over central Montana. This will keep much of the
snowfall mainly north of a line from Harlowton to Roundup.
Tomorrow winds will become northeasterly. This will bring some
upsloping, but it will be fairly shallow. Areas along the
foothills could see a couple of inches, but note expecting any
issues over the next 36 to 48 hours.

Through the remainder of the short term, the wave will move
through. This will result in some unstable northwest flow across
the area. Some some chance PoPs given the dirty flow, but not
expecting much accumulations. Temperatures will continue to be
seasonable. Reimer

.LONG TERM...valid for Wed...Thu...Fri...Sat...Sun...

Extended models are in good agreement through the week but
diverge by next week. Overall, a fast northwest flow aloft will
prevail across the forecast area. A few disturbances within the
flow will bring periodic chances for snow/rain showers across the
area. The main weather feature will be periods of strong gusty
winds mainly west of Billings Wednesday and again Thursday night
into Friday night. A couple of surface lows will move across
southern Canada and northern Montana resulting in tight pressure
gradients across the Upper Yellowstone and upper Stillwater
Valleys. This will result in strong gusty winds from Big Timber to
Livingston north to Harlowton. Models bring a strong upper level
disturbance across the forecast area next weekend but timing and
differences exist, but in any case, this may be the next chance
for the possibility of accumulating snow. Temperatures will be
near normal through the period with possibly above normal readings
on Friday. Hooley



A disturbance will move across north central and northeast
Montana tonight. This will bring a chance for snow along and
mainly north of a KMLS-KBIL-KLVM line late this evening through
Monday morning. Expect some MVFR to IFR conditions with the snow.
Otherwise, the lower elevations may see an isolated snow shower
with VFR conditions prevailing. The mountains will be obscured due
to snow shower activity. Hooley


    Mon     Tue     Wed     Thu     Fri     Sat     Sun
BIL 019/027 017/034 019/039 023/039 027/048 032/044 028/042
    33/S    42/S    12/W    33/W    11/B    12/W    23/W
LVM 014/026 011/028 016/034 022/036 026/043 030/043 026/038
    34/S    54/S    22/J    33/J    21/N    22/W    33/W
HDN 020/032 015/038 018/041 021/041 025/051 030/047 026/046
    22/S    31/B    12/W    32/W    11/B    12/W    13/W
MLS 020/033 019/037 021/038 022/039 024/050 032/047 030/044
    32/S    22/O    13/W    21/B    21/B    11/B    13/W
4BQ 020/038 019/038 020/040 022/041 025/052 032/052 028/051
    11/B    22/S    12/W    31/E    11/B    11/B    12/W
BHK 019/031 016/032 017/034 018/033 021/046 029/046 026/040
    12/S    32/S    24/J    21/B    22/W    11/B    13/W
SHR 016/031 012/033 013/037 018/037 020/048 027/048 025/045
    02/S    32/S    11/B    32/W    11/B    01/B    12/W




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