Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 232108
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT
308 PM MDT Wed Aug 23 2017

.SHORT TERM...valid for Thu and Fri...

Ridging begins to push eastward this evening as a low pressure
system moves into central Canada. Associated weak cold front will
slide into the area tomorrow night. Ahead of the cold front,
scattered thunderstorms will develop in the mountains during
the afternoon and transition eastward onto the Plains during the
late afternoon and early evening. Weak shear, CAPE around 500
j/kg, and PWAT close to an inch expected tomorrow afternoon, which
suggests wet downburst/general thunderstorm activity across the
area. Southeast winds over the Plains ahead of the front will gust
20-30 mph during the afternoon hours. Weak front moves through
overnight and shower/thunderstorm chances transition onto the
eastern Plains. Better instability over the east on Friday, but
shear remains weak and the front might be too far east for
significant thunderstorm coverage. Behind the front isolated
thunderstorms possible during the late afternoon and evening.
Walsh

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

Generally dry and warm forecast through the extended period.
Ridging builds in by the weekend with temperatures at or above
normal through the period under westerly/northwesterly flow aloft.
Isolated shower or thunderstorm possible Saturday
afternoon/evening over eastern zones with weak shortwave moving
across the northern portion of the state. By beginning of the
week, models indicate dry front moves in from the north which
could bring some increased winds to the area. Walsh

&&

.AVIATION...

VFR conditions will prevail today and tonight. Areas of smoke
across the area through tonight. VCTS possible at LVM, BIL, and
SHR during the late afternoon/early evening. Walsh

&&

.PRELIMINARY POINT TEMP/POPS...

    Thu     Fri     Sat     Sun     Mon     Tue     Wed
-----------------------------------------------------------
BIL 063/086 060/084 058/088 057/088 058/089 059/086 058/086
    02/T    41/B    20/U    00/U    00/U    00/U    01/U
LVM 057/082 051/083 050/087 048/089 049/089 049/086 049/086
    24/T    43/T    31/U    00/U    00/U    01/U    01/B
HDN 061/093 058/087 057/090 055/090 056/091 057/089 056/089
    03/T    31/B    20/U    00/U    00/U    00/U    11/U
MLS 063/094 064/087 059/089 057/089 058/091 059/088 057/087
    03/T    52/T    12/W    10/U    00/U    00/U    01/U
4BQ 061/091 061/087 057/089 055/088 056/089 057/088 055/087
    04/T    52/T    21/U    10/U    00/U    00/U    00/U
BHK 059/088 060/083 055/084 054/086 054/087 055/085 054/083
    01/N    34/T    22/W    20/U    00/U    00/U    00/U
SHR 058/087 055/084 052/087 052/087 052/087 052/085 051/085
    13/T    33/T    31/U    00/U    00/U    00/U    11/U

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...Red Flag Warning in effect until 9 PM MDT this evening FOR
      ZONE 117.
WY...None.

&&

$$
weather.gov/billings



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