Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 180930
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
330 AM MDT Thu Jul 18 2019

.DISCUSSION...Gusty winds are expected across west central and
northwest Montana this afternoon and evening as a strong jet
stream settles over the Northern Rockies. The strongest winds are
expected across the higher terrain of Glacier Park Region near the
Continental Divide. Wind gusts up to 50 mph will be possible for
higher elevation areas, including Logan and Marias Passes. Gusty
winds will also cause significant chop on area lakes this
afternoon and evening and a Lake Wind Advisory has been issued
for Flathead Lake.

A few afternoon and evening thunderstorms will be possible across
northwest Montana near the Canadian border. Below normal high
temperatures will continue today and tomorrow with temperatures
running 10 to 15 degrees below average.

A warming trend is expected Saturday through early next week as
high pressure builds across the Northern Rockies. High
temperatures will climb into the mid 90s Monday across western
Montana valleys and into the triple digits for lower elevations of
of north central Idaho. Similar high temperatures are expected
Tuesday through Thursday as confidence continues to increase for
the first heat wave of the summer next week across the Northern
Rockies.


&&

.AVIATION...
Gusty westerly winds will develop later this morning across the
Northern Rockies as a strong jet stream settles over the area.
Wind gusts up to 30 knots will be possible at KMSO, KBTM, and KGPI
from 18/1800Z to 19/0300Z. Drier air will begin to work into area
this afternoon and evening, bringing an end to most shower
activity. The exception will be across far northwest Montana where
a few showers and thunderstorms will be possible near the Canadian
border.


&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Lake Wind Advisory from noon today to 9 PM MDT this evening
     Flathead/Mission Valleys.

     Wind Advisory from noon today to 9 PM MDT this evening West
     Glacier Region.

ID...None.
&&

$$


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