Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 241552

Area Forecast Discussion...Updated
National Weather Service Billings MT
952 AM MDT Tue Apr 24 2018


Only change this morning to end precipitation potential over
southeast zones as storm system has exited the area. The rest of
the forecast is in good shape for a beautiful sunny spring day.
Will be melting a lot of yesterdays snowfall. Chambers


.SHORT TERM...valid for Tdy and Wed...

Our upper trough will be exiting to the southeast early today. We
expect to see some lingering precipitation (rain/snow) in the
southeast corner of the state, but we should be all but completely
done by noon. We have cancelled the advisories for Powder River,
Southern Rosebud and the Bighorns where additional snowfall will
be limited and not induce any additional impacts. We will leave
the advisory for Carter County going for now due to its closer
proximity to the upper trough and current radar trends. We do
anticipate some areas of fog this morning over portions of the
west and central zones that have cleared out overnight as dewpoint
depressions are under 3 degrees at many locations. By afternoon
though, ridging over the Rockies and high plains takes over
pushing highs into the 50s and should quickly melt any of that wet
snow that fell yesterday.

Wednesday will be warm and breezy with westerly downslope winds
and sunny skies pushing temperatures near 70 degrees. A fast
moving clipper system drops in from Canada late in the day
shifting winds to the north and bringing a chance of showers and
maybe a few thunderstorms Wednesday evening into the overnight
hours. Best chance for precipitation will be west and south of
Billings where upslope enhancement is greatest. The high country
may see snowfall, but precip at the lower elevations should be
rain. This system quickly exits to the south by sunrise Thursday.

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

A ridge of high pressure and warmer westerly flow will control
much of the weather through the end of the week and into the
middle of the weekend across the forecast area. With the warmer
conditions, we`re also expecting mostly dry conditions until the
middle part of the weekend. As for temperatures, a gradual warming
trend will take place with the mid 60s expected on Thursday, low
to mid 70s on Friday, and then temperatures around 80 degrees by
Saturday afternoon.

Conditions become more active by the end latter part of the
weekend and into next week as a large upper level low moves into
Montana from the west. Quite a bit of uncertainty in regards to
the details but scattered showers and a few thunderstorms move
into the forecast for Sunday afternoon. Into the start of next
week the unsettled flow, and the influence of the upper level low
will still be in place across Montana with scattered chances for
showers and possibly some snow into next Monday and Tuesday.
Expect cooler conditions as well with temperatures dropping back
into the 50s and 60s next week (possibly cooler depending on the
eventual track and evolution of next weekend`s upper level low).



Low clouds producing MVFR conditions across portions of the
western valleys will burn off by 18z. Light snow showers producing
MVFR to IFR conditions will continue to diminish over far SE
Montana. Otherwise, expect mainly VFR conditions to prevail across
the area today. STP



    Tdy Wed     Thu     Fri     Sat     Sun     Mon
BIL 056 035/069 037/065 040/077 046/080 049/071 041/062
    0/U 00/U    30/U    00/U    01/U    23/W    44/W
LVM 054 030/063 034/067 037/076 042/075 044/065 035/058
    0/U 01/U    30/U    00/U    11/U    35/W    65/W
HDN 057 032/069 037/066 038/079 044/082 050/074 041/064
    0/U 00/U    20/U    00/U    00/U    23/W    33/W
MLS 058 033/070 036/063 037/075 045/078 052/074 043/062
    0/U 00/U    10/U    00/U    00/U    13/W    33/W
4BQ 050 031/065 036/059 037/072 044/077 052/073 042/060
    1/U 00/U    20/U    00/U    00/U    12/W    12/W
BHK 052 031/063 037/060 035/072 043/075 050/072 042/061
    0/U 00/U    10/U    00/U    00/U    12/W    22/W
SHR 052 027/070 037/061 036/075 042/079 048/071 040/063
    1/B 00/U    30/U    00/U    01/U    22/W    22/W




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