Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 142241

Area Forecast Discussion
National Weather Service Billings MT
341 PM MST Tue Nov 14 2017

.SHORT TERM...valid for Wed and Thu...

A band of rain/snow over eastern MT and WY is continuing to push
east along a cold front that is moving through the area. This
evening, rain/snow comes to an end and skies begin to clear from
west to east. Cooler air mass will yield lows in the upper 20s
tomorrow morning under clear skies. By afternoon, temps warm into
the low to mid 40s with increasing cloud cover moving in from the
west by later in the day. Tomorrow night, a strong jet slides
into the northern Rockies ahead of an approaching low pressure
system. Should see increased winds along the Beartooth foothills
in the Red Lodge area into Thursday morning. As height falls spill
down the east side of the Divide, Thursday afternoon will be
breezy especially in the western zones with 30 to 40 mph gusts
possible during the late afternoon. Downslope winds and pre-
frontal airmass will see highs likely into the 50s Thursday before
rain/snow showers push across the region along a frontal boundary
Thursday night into Friday morning. Walsh

.LONG TERM...valid for Fri...Sat...Sun...Mon...Tue...

Upper cyclonic flow over the Northern Rockies on Friday can
produce a few light showers over southern MT and northern WY.
Any precipitation would be snow in the morning, then transition
to rain showers in the lower elevations for the afternoon. It
should be breezy as a surface low tracks over northeast
MT...placing our region in a decent surface pressure gradient.
High temperatures should be in the 30s and lower 40s...about 10
degrees cooler than Thursday`s expected highs.

Upper ridging should build over the Northern Rockies on Saturday
and continue through Monday. This pattern should give dry and mild
weather to the area. Could have a few mountain snow showers on
western-facing slopes as some Pacific moisture can move through
the westerly, semi-zonal flow. In addition, the surface pressure
pattern looks favorable for strong gap flow winds in the
Livingston area Saturday and Sunday.

There is some indication that a shortwave could move through the
region on Tuesday, giving a slight chance of showers.

High temperatures should be in the 40s Saturday through Tuesday,
with a few locations over SE MT reaching the lower 50s on Monday.


Rain and snow showers are occurring over parts of southern MT and
northern WY this afternoon. These showers should exit our region
to the southeast by 00z Wednesday. Temporary MVFR conditions can
occur under the showers. Skies should generally clear
overnight...although some low clouds and fog are possible late
this evening into the morning northeast of a KBIL-KSHR line,
potentially affecting KRPX, KMLS, KBHK, and K4BQ. There will be
some areas of mountain obscuration this evening. RMS


    Wed     Thu     Fri     Sat     Sun     Mon     Tue
BIL 028/041 033/053 030/041 028/042 027/048 032/050 032/047
    00/U    12/W    42/W    11/N    10/B    11/B    12/W
LVM 027/042 036/049 027/036 024/036 025/042 029/044 031/043
    00/N    25/W    54/W    11/N    11/N    12/W    22/W
HDN 028/045 028/055 030/044 025/044 023/049 028/053 028/047
    00/U    11/B    43/W    11/B    00/B    11/B    12/W
MLS 027/042 028/054 030/043 024/042 023/048 027/049 028/043
    10/U    01/E    42/W    11/B    11/B    01/B    11/B
4BQ 027/047 031/062 033/043 026/043 023/050 029/052 029/047
    10/U    01/B    42/W    11/N    00/U    01/B    11/B
BHK 023/038 025/054 028/041 020/039 021/047 025/047 025/040
    10/U    01/B    22/J    11/B    10/U    00/B    11/B
SHR 027/046 028/059 028/041 021/042 021/050 027/051 027/047
    10/U    01/B    55/W    20/U    00/U    11/B    22/W




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