Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 080808

Area Forecast Discussion
National Weather Service Billings MT
108 AM MST Mon Mar 8 2021


Tonight through Tuesday night...

Zonal flow will transition to a southwestern flow as a trough digs
into the area along with a surface low spinning up along the
Wyoming Montana border. Energy will pass over the area but
moisture will stay to the north and south of southeastern Montana.
Temperatures will remain above normal for this time of year today but
will cool Tuesday as the front passes through the area. The
mountains will see 5 to 7 inches over a period of 36 hours with
the lower elevations seeing a dusting at best. Gap winds will
increase from Livingston to Big Timber tonight into early Tuesday with
gusts up to 45 mph. Winds will also increase across the east
Tuesday morning as the surface low begins to tighten with gusts
up to 25 mph.

High temperatures today will reach the 50s, cooling into the 40s
for Tuesday.


Wednesday through Sunday...

The extended period starts off with an upper trough over the west
coast dominating the longer wave pattern and appears disconnected
from a trough over upper Canada. As the west coast trough tracks
into the southwestern U.S. a cyclonic flow develops over our
region. Eventually, the trough in the southwest becomes cut off
with high pressure developing in western Canada, setting up a
ridge over low pattern by Friday.

What all this means is a cool and unsettled period Wednesday
through Thursday for our CWA, followed by a return to above normal
temperatures and drier conditions Friday and into the weekend.

At this point, the best chance of any precipitation is in Sheridan
County (Big Horns region) and along the Montana/Wyoming border
on Wednesday. There may be a brief period of favorable upslope
into the Red Lodge foothills as well.

Temperatures Wed-Thu will see highs in the upper 30s-40s with
overnight lows mainly 20s. Look for upper 40s-50s by the weekend.


VFR conditions will prevail as high clouds increase today. A few
rain/snow showers are possible over the Absarokee/Beartooth
Mountains by afternoon, increasing by evening with some obscured
mountain tops possible. Light easterly surface winds will develop
by afternoon for most locations under a south-southwest mid level
flow. BT



    Tdy Tue     Wed     Thu     Fri     Sat     Sun
BIL 054 031/047 028/045 023/042 026/049 028/053 029/052
    0/B 22/O    12/S    01/B    11/U    00/U    11/B
LVM 048 032/041 024/041 021/039 022/044 025/049 026/048
    1/B 52/O    22/S    01/B    11/U    00/U    11/B
HDN 057 031/049 027/045 022/043 023/051 024/054 026/054
    0/B 12/O    23/S    01/B    11/U    11/U    11/U
MLS 057 032/045 026/045 022/040 021/048 024/051 026/051
    0/B 12/O    01/E    00/B    00/U    00/U    01/U
4BQ 062 033/047 026/041 023/042 022/047 024/050 025/050
    0/B 01/N    24/S    10/B    10/U    00/U    01/U
BHK 059 032/045 024/041 020/041 018/046 022/050 024/047
    0/B 01/N    02/S    10/B    00/U    00/U    00/U
SHR 057 030/046 026/038 021/040 018/044 019/047 021/047
    0/B 11/B    56/S    11/B    11/U    11/U    11/B




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