Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 180927

Area Forecast Discussion
National Weather Service Missoula MT
326 AM MDT SAT APR 18 2015

.DISCUSSION...A weak weather disturbance is still on track to
bring light valley rain and mountain snow showers, mainly along
the Continental Divide of western Montana today. Not a lot of
moisture will be associated with this system, so areas west of
the Divide in Montana and central Idaho will mainly only see an
increase in cloud cover. Breezy southwest winds ahead of the
system could create some light chop on area lakes this afternoon.
Once the front slides south later this afternoon and evening,
winds will switch out of the northeast, with increasing gusts,
especially across southwestern Montana and along the Continental

A building high pressure to the west will keep the Northern
Rockies under a dry northwesterly flow Sunday. Temperatures are
expected to be around normal. The high pressure will begin to
migrate eastward Monday and Tuesday. Temperatures for the start
of the new work week, will likely be a few degrees above normal.
Highs for Monday will be in the upper 60s low 70s, with Tuesday
being even warmer, possibly seeing highs in the mid to upper 70s
for some.

Starting Wednesday through the rest of the week, forecast models
begin to differ a bit in forecast solutions. However, indications
are that the Northern Rockies will become more unstable as the
high pressure breaks down. So began raising the chances for
showers in the forecast beginning Wednesday. Some forecast models
are indicating the potential for scattered thunderstorms across
central Idaho and southwestern Montana Wednesday afternoon and


A weather disturbance will influence mainly northwest Montana and
the Divide through Saturday night, increasing ridge winds and
cloud cover over the region. This disturbance will bring showers
generally along the Divide. Expect generally fair weather at the
TAF sites, with gusty afternoon winds 15 to 25 kts possible for



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