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fxus65 kbyz 230955 

Area forecast discussion
National Weather Service Billings Montana
255 am MST Tue Jan 23 2018

Short term...valid for tdy and Wed...

Ridging is working into the area. Some energy however, mainly over
the mountains, is slow to move out. Some chance pops remain over
the mountains today. The bigger concern in the short term
continues to be the winds along the foothills. As Lee-side
troughing develops this afternoon, the surface pressure gradient
along the foothills is going to increase. Current progs are
approaching levels that are expected for a Wind Advisory. The mav
and lamp guidance for Livingston is also supports the stronger

The pressure gradient does not really decrease until maybe early
Thursday as the ridge starts to move out. The mixing during the
day on Wednesday will help to decrease winds a little, but
mixing decrease Wednesday evening winds maybe able to increase
again to near advisory speeds. With better downslope flow during
the day Wednesday, expect temperatures across the area to be
somewhat warmer, highs into the 40s. With the ridge dominating the
weather, expect conditions to be dry Wednesday. Reimer
long term...valid for Thu...Fri...Sat...sun...Mon...

Heights fall on Thursday as a weakening trough moves through the
region. Front pushes through the area but pattern does not look
like much of a precipitation producer given the stronger dynamics
pass north of the region. Not much of an airmass change so do not
expect a dramatic frontal push but should see warmest temperatures
in the morning hours. Behind the system northwesterly flow
prevails Friday and Saturday with little moisture but could bring
shower activity to the mountains.

Pattern becomes more downslopish Sunday bringing a shot of warmer
temperatures as the flow becomes a bit more westerly. Monday a
weak ridge moves into the region bringing some isentropic lift
through the lower elevations while the mountains continue to see
moisture. Could be some precipitation across south central and
southeast Montana but models show progressive nature to this band
lifting northward through the area which will limit any impacts.



VFR conditions through the region with mid to high level clouds.
Increasing winds this evening along the foothills and klvm
becoming strong by weds morning. Borsum


Preliminary point temp/pops...

Tdy Wed Thu Fri Sat sun Mon
bil 035 022/043 028/043 022/035 018/033 019/039 026/043
0/u 01/b 01/b 11/b 11/b 11/b 11/b
lvm 036 029/045 029/041 017/033 017/033 024/042 027/046
0/north 11/north 04/o 32/S 21/north 22/west 21/north
hdn 035 014/042 021/041 018/036 015/033 015/036 018/040
0/u 01/b 01/b 11/b 11/b 11/b 10/b
mls 030 011/035 018/037 020/033 014/026 011/031 016/035
0/u 00/b 01/b 11/b 11/b 11/b 11/b
4bq 034 015/042 023/043 023/036 019/033 018/037 021/041
0/u 00/b 00/b 11/b 11/b 11/b 11/b
bhk 031 014/039 020/041 021/034 013/027 009/032 016/037
0/u 01/b 00/b 11/b 11/b 11/b 11/b
shr 035 016/043 023/043 019/034 014/032 017/038 022/043
0/u 00/u 01/b 32/S 11/b 10/b 10/b


Byz watches/warnings/advisories...

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