Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 161010
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
410 AM MDT Wed Apr 16 2014

.DISCUSSION...

A series of weather systems will exist across the Northern Rockies
through the remainder of the week. The first of these systems
appears to be winding down this morning, with rain/snow shower
activity dwindling along the Continental Divide, particularly over
Marias Pass near Glacier Park. Considering recent snowfall and
temperatures hovering around freezing through this morning, a few
dangerous patches of snow/ice on the roadway will exist.

Snow levels will rapidly increase throughout today, coinciding
with the next relatively warm Pacific storm system. The
convective nature of this upcoming system will definitely favor
the mountains for precipitation. Snowfall at mountain pass
elevations will not present a significant travel hazard, with much
of the snow melting on-contact with the road surface.

Daytime temperatures will continue to warm on Thursday, ahead of
the next surface cold front later in the evening and overnight.
Model guidance suggests that brief heavy rain and snow will
develop along the cold front. The amount of travel impact from
this cold front passage will hinge upon more specific timing of
the frontal passage. Mountain passes may see some quick snow
accumulation, possibly creating snow covered roads for several
hours thereafter through Friday morning. Mainly high elevation
snow and rain showers will exist through Friday, ahead of the next
dry period.

Saturday and Sunday appear largely dry and warm across the
Northern Rockies.

Another series of storm systems is anticipated to affect the region
late Sunday night through the middle of next week. These systems
do not appear to bring significant cooling to the region, but
rather a continuation of typical springtime low elevation rain and
high elevation snow showers.

&&

.AVIATION...Patchy fog is possible in locations that both received
rain and mostly clear skies overnight, which was mainly through
northwest Montana including KGPI. Any fog that develops will
dissipate quickly this morning. A cold front is still passing
along the Continental Divide and will cause obscured terrain due
to clouds and snow showers. Cloud cover will increase for the rest
of the region today with the next disturbance. Showers will develop
through this morning and especially this afternoon, so expect
terrain to become obscured. Showers and obscured terrain will last
into tonight.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER WEATHER ADVISORY until Noon MDT today for Marias Pass IN
     THE West Glacier Region.

ID...None.
&&

$$

Zumpfe
Aviation...Kitsmiller

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