Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 220931

Area Forecast Discussion
National Weather Service Missoula MT
331 AM MDT Thu Jun 22 2017

.DISCUSSION...A ridge of high pressure will build along the west
coast today, placing western Montana and central Idaho under
northwest flow aloft. Most locations will see sunny skies,
temperatures running slightly below seasonal normals and breezy
north to northwest winds. A weak disturbance will brush the
Continental Divide this afternoon, and may produce a few afternoon
showers in the vicinity of Glacier National Park. Very similar
conditions will persist into Saturday, with a slight warming trend
each day.

On Sunday and much of Monday, the ridge will slowly transition
across the Northern Rockies resulting in dry conditions and
warming temperatures (mid 80s to lower 90s in the valleys).

Late Monday into Tuesday, the ridge will breakdown allowing a
southwest flow to set up. Daytime heating and occasional
disturbances will act on increasing mid level moisture to bring
scattered showers and thunderstorms through the middle of next
week. Breezy winds can also be expected while temperatures cool to
more seasonable levels.


.AVIATION...Most of western Montana and central Idaho will
experience generally clear skies today under a dry northwesterly
flow aloft. A weak disturbance along the Continental Divide will
lead to an increase in mid level clouds and possibly a few
showers this afternoon, particularly near Glacier National Park.
Breezy north to northwest winds are anticipated at all airfields
by midday, though KMSO and KBTM will likely see the strongest
winds with gusts up to 25 kts possible. Wind will decrease rapidly
in the evening.



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