830 FXUS65 KMSO 272042 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 242 PM MDT Sun Jul 27 2014 .DISCUSSION...Building high pressure has produced a very nice day across western Montana and Central Idaho. Temperatures should reach the 90s for much of the valleys of Western Montana with mid 90s for portions of Central Idaho. Monday and Tuesday...High pressure will continue to control the weather across the region with temperatures continuing to warm. Upper 90s will be common in western Montana and a few 100s are expected in west Central Idaho. Some southwest monsoonal moisture though will creep up underneath the ridge and with some instability to work with, a few thunderstorms are expected to develop. This will be more evident in Southwestern Montana and Lemhi County of Idaho. The storms are expected to be the more common airmass variety with very little potential of becoming severe. From mid-week to the end of the week, the ridge begins to weaken a little, allowing temperatures to slightly drop and showers and thunderstorms to migrate further north into West-Central Montana. && .AVIATION...Great flying conditions will continue this evening and into tomorrow. Predominantly light winds and mostly clear skies are expected. A few showers and thunderstorms are possible tomorrow afternoon across SW Montana and Central Idaho, with an outside chance of storms impacting KBTM and KSMN. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$ Follow us on Facebook and Twitter! https://www.facebook.com/NWSMissoula https://www.twitter.com/NWSMissoula