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fxus65 kmso 240922 

Area forecast discussion
National Weather Service Missoula Montana
322 am MDT Sat Jun 24 2017

Discussion...fair weather cumulus are expected today along with
pleasantly warm temperatures. The only chance for a stray shower
will be in the Glacier park area this afternoon and evening as a
weak disturbances slides by. High pressure will dominate Sunday
into Monday allowing for abundant sunshine with high temperatures
rising into the 90s for many valley locales.

The high pressure ridge will shift eastward by later Monday,
allowing southwesterly flow and subtropical moisture to influence
the northern rockies by later in the day. This pattern is
favorable for some afternoon and evening thunderstorm development
that will last into the Monday overnight period. The most active
period of showers and thunderstorms currently looks to be around
midnight and after, resulting in the occurrence of nocturnal
lightning, gusty winds, and brief heavy rainfall. This
thunderstorm activity will shift into central Idaho and southwest
Montana by Tuesday morning, and will remain active throughout
Tuesday. Due to the passage of this disturbance, high temperatures
on Tuesday are progged to reach around normal which will be about
10 degrees cooler than Monday.

Beyond Tuesday, forecast models support a cooler northwesterly
flow pattern as temperatures return to seasonable levels. Daily
shower and thunderstorm chances and breezy afternoon winds are
also expected.


Aviation...aside from some fair weather cumulus clouds and brief
showers along the Continental Divide this afternoon, the weather
conditions throughout the northern rockies will be quite nice for
flight over the next 24 hours.


Mso watches/warnings/advisories...

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