Weather Service Report

FXUS65 KMSO 150918

Area Forecast Discussion
National Weather Service Missoula MT
318 AM MDT Mon Oct 15 2018

.DISCUSSION...High clouds aloft associated with a weak weather
system brushing over Western Montana early this morning are 
keeping temperatures in many places a bit more temperate than
forecast. However, there are several breaks in these clouds, and 
it will take only an hour or two for temperatures to plummet and 
fog or stratus to develop.

Temperatures this afternoon will be once again below normal, the
15th occurrence of below normal temperatures over the past 16 
days (spanning back to September 28th). However, high pressure 
building along the west coast will begin to slide inland this 
evening and slowly east throughout the week; a trend which will 
initiate a persistence of above normal daytime high temperatures 
and crisp, cold, near normal October mornings.

This trend will continue through the second half of the week as
high pressure remains in place. In fact, it doesn't appear that
this area of high pressure will leave our area until early next
week (Oct 21-23), so above normal high temps and dry conditions
will continue through then. 


.AVIATION...Periodic reductions in visibility from fog sloshing in
and out at KGPI have been occurring so far this morning, and 
should continue through roughly mid-morning before improving. KMSO
may also be mildly impacted by nearby fog, though not for a
prolonged period of time. Pleasant conditions with plenty of sun
and light afternoon winds will occur thereafter for the entirity
of the Northern Rockies due to persistent high pressure. 




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