Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 230244
AFDBYZ

Area Forecast Discussion...Updated
National Weather Service Billings MT
844 PM MDT Tue Aug 22 2017

.UPDATE...
Upper ridge over western Montana was keeping the area dry tonight
with a clear sky. Monsoon moisture from northern California to
northern Utah will start to inch north and this will contribute to
increasing convection chances later this week, but not tonight.
Current grids in good shape. TWH

&&

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

Warm and dry conditions continue across the region as high
pressure remains firmly entrenched. Temperatures will be the
warmest they have been in a while with temperatures in the low to
mid 90s possible. Weak cold front approaches from the west on
Thursday. Scattered thunderstorms should develop Thursday
afternoon in the Absaroka Mountains and western foothills. Models
a little less certain for the coverage near Yellowstone county
and other central Plains locations so keeping slightly lower PoPs
there. As front pushes eastward over the Plains scattered
thunderstorms will continue over eastern Montana into the night.
Convection is not expected to be strong, although high based
convection always poses some threat of gusty winds this time of
year. Frontal passage expected Friday morning but models have
trended weaker with this front, so gusty winds look less likely
along the front Friday morning. Walsh

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

Coolest day of the extended forecast will be on Friday as a cold
front ushers in slightly cooler air. Expect a few showers and
thunderstorms to work their way across the region ahead of this
front. A few more showers and thunderstorms possible in the
afternoon hours over the higher terrain as well. Not expecting
critical fire conditions at this time as the cooler temps should
keep relative humidities high enough to avoid critical concerns.
Expect temperatures to be around seasonal levels and in the mid
80s.

Through the weekend and into the start of next week, a
ridge of high pressure begins to build over the west. This will
allow temperatures to climb back into the upper 80s and near 90.
This ridge will also keep the rain away with mostly dry conditions
expected for the weekend and into early next week. Dobbs

&&

.AVIATION...

VFR conditions will prevail through the night. Dobbs

&&

.PRELIMINARY POINT TEMP/POPS...

    Wed     Thu     Fri     Sat     Sun     Mon     Tue
-----------------------------------------------------------
BIL 061/092 061/090 060/083 058/088 058/087 058/088 059/086
    00/U    02/T    31/B    10/U    00/U    00/U    01/U
LVM 053/089 053/086 051/082 050/088 048/087 049/088 050/086
    01/U    13/T    42/W    10/U    00/U    00/U    01/U
HDN 058/094 059/093 059/085 056/089 055/089 057/090 057/088
    00/U    02/T    31/B    10/U    00/U    00/U    01/U
MLS 060/092 061/094 064/086 057/088 058/088 057/089 059/088
    00/U    01/U    32/W    10/U    10/U    00/U    01/U
4BQ 059/092 059/091 060/085 055/088 056/088 056/088 057/087
    00/U    02/T    33/T    10/U    10/U    00/U    01/U
BHK 055/088 057/088 059/081 053/084 054/085 054/085 054/085
    00/U    01/U    35/T    10/U    00/U    00/U    00/U
SHR 057/089 055/088 055/082 052/087 052/086 052/086 052/085
    01/U    12/T    32/T    31/U    00/U    00/U    01/U

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...Fire Weather Watch in effect from Wednesday afternoon through
      Wednesday evening FOR ZONE 117.
WY...None.

&&

$$
weather.gov/billings


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