Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 290959

Area Forecast Discussion
National Weather Service Missoula MT
359 AM MDT FRI APR 29 2016

.DISCUSSION...A cloudy, showery day is in store for much of the
area. Rain showers currently over Clearwater and Idaho county
will increase in coverage this morning as a weak but moist low
pressure system spins over the area through today. By this
afternoon, the system will be over much of the Northern Rockies,
leading to showers over the mountains, which could at times drift
over valleys. Only light rainfall amounts are expected for western
Montana valleys with a few hundredths of an inch accumulation.
Totals of a few tenths are possible by the end of the day in north
central Idaho where the main focus of precipitation will be. Snow
will stay above 5000 to 6000 feet as snow levels slowly trend

Lingering showers will again give chances for light rain on
Saturday, but the overall accumulations will be lighter than on
Friday, as the low pressure moves to the south and away from our
area. Breezy east winds will accompany a transition throughout the
overnight and into Sunday, as ridge of high pressure begins to
establish itself overhead. This will lead to a warming and drying
trend through the middle of next week. Temperatures in the 70s are
forecast by Tuesday and Wednesday. Models hint at cooler, more
unsettled weather for the end of next week, but confidence in the
particular impacts remains low at this point.


.AVIATION...Model profiles suggest a slight chance for KBTM to
see some patchy fog or low stratus this morning, but given light
winds much of the night and a pattern not usually conducive for
fog formation, this possibility was discounted in the forecast.
Vicinity showers should affect most terminals this afternoon, with
minimal impact to operations. A lightning strike or two is
possible in the vicinity, primarily over the mountains, but
overall lack of instability will prevent this from being a
widespread threat. Mid level cloud decks continue throughout the
day and overnight tonight.



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