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FXUS65 KMSO 031240 CCA

AFDMSO



Area Forecast Discussion...CORRECTED

National Weather Service Missoula MT

640 AM MDT Fri May 3 2024



.DISCUSSION...A ridge of high pressure will be moving over the

region today and lingering through Saturday. The Northern Rockies

will continue to have a few isolated light showers today,

especially during the afternoon hours. Temperatures will be

warming over the next 24 to 36 hours as readings are still

anticipated to be around 5 degrees above seasonal average by

Saturday. 



The ridge will be short lived as a significant low pressure system

will move inland over northern California and track across the

Great Basin area Saturday night into Monday. This low pressure

system will cause temperatures to drop back to around 10 degrees

below average by Monday with widespread precipitation. Snow levels

will be dropping to around 5000 feet by Monday morning with north

central Idaho into southwest Montana having the potential of

receiving a couple inches of snow.  



The low tracks to the north east into the Dakotas by mid next

week. The placement of the low will keep the Northern Rockies in a

cool and showery pattern with upslope precipitation impacting the

Glacier NP region Tuesday into Wednesday. Marias Pass has the

potential of receiving 2 to 4 inches of new snow during this

period. 



Weak northerly flow will persist over the region through the end

of the work week keeping temperatures near to slightly below

average for this time of year. Then by this weekend around 70% of

the models are showing a ridge of high pressure developing 

causing a warming and drying trend. 





&&



.AVIATION...A ridge of high pressure will be building over the

region causing the overnight shower activity to steadily diminish

this morning. Enough atmospheric instability should be available

this afternoon for the development of a few light showers,

especially across extreme northwest Montana. This showers should

have little to no impact at area terminals this afternoon and

evening. 





&&



.MSO WATCHES/WARNINGS/ADVISORIES...

MT...None.

ID...None.

&&



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