Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 190439

Area Forecast Discussion...Updated
National Weather Service Billings MT
1039 PM MDT Tue Jul 18 2017


Quick update to add in isolated showers and thunderstorms across
our northwestern areas generated by a low amplitude shortwave
working into the Northern Rockies. The rest of the forecast is on
track and the previous forecast discussion is below. STP


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

As a shortwave rides into northern Montana near the Canadian
border, shower and thunderstorm development will be favored over
the eastern Plains. The majority of the convection will form along
the nose of a low-level jet that forms over night and looks to
remain mainly north of our area. Isolated thunderstorms with a few
strong storms are possible mainly from Rosebud County eastward
during the overnight hours. Ridging builds back in tomorrow which
will warm temperatures a few degrees each day peaking in the upper
90s to low 100s across most of the area. Ahead of an approaching
cold front, isolated to scattered thunderstorms possible over the
eastern Plains on Thursday afternoon and evening. Walsh

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

Friday, a cold front pushes across the region with some increased
northwest winds possible along the front. Humidity values will be
in the teens to low 20s so keeping an eye on that portion of the
forecast for fire weather concerns. Models still keep the frontal
passage dry on Friday and don`t bring any significant chances for
rain until some time around mid week as a shortwave pushes in from
the west. Highs will generally be in the upper 80s to low 90s
through next week. Walsh



Can`t rule out an isolated shower or thunderstorm tonight, but VFR
conditions will prevail. Expect increased southeast winds over SE
Montana overnight that may result in low level wind shear in some
locations. Chambers



    Wed     Thu     Fri     Sat     Sun     Mon     Tue
BIL 065/092 065/098 064/092 060/089 060/089 061/092 063/093
    10/U    00/U    00/U    00/U    00/U    00/U    21/U
LVM 055/088 054/094 052/089 050/087 049/087 052/089 054/090
    10/U    00/U    00/U    00/U    01/U    01/U    21/U
HDN 065/093 063/101 061/093 058/090 057/091 059/095 060/096
    10/U    00/G    10/U    00/U    00/U    11/U    11/U
MLS 069/092 067/101 066/094 061/091 059/090 062/093 065/096
    22/T    02/T    10/N    00/U    00/U    01/U    11/U
4BQ 066/090 065/100 066/093 060/090 059/089 061/092 063/095
    21/U    02/T    20/U    00/U    01/U    11/U    11/U
BHK 065/089 063/096 064/093 057/089 055/087 057/090 060/093
    23/T    02/T    20/U    00/U    00/U    01/U    11/U
SHR 061/088 060/097 059/091 054/088 053/088 054/090 056/093
    11/U    12/T    20/U    00/U    01/U    11/U    21/U




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