Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 240953

Area Forecast Discussion
National Weather Service Missoula MT
353 AM MDT Wed Apr 24 2019

.DISCUSSION...A few showers linger this morning, especially across
northwest Montana. These should gradually diminish through early
afternoon as high pressure builds over western Montana and
central Idaho. Warmer and drier conditions will prevail into
Thursday, with breezy afternoon winds each day.

The pattern begins to change on Friday as a trough of low pressure
and associated cold front move through the region. The latest
forecast models have trended wetter with this system, with
widespread showers expected, especially across northwest Montana
and central Idaho. Cooler and breezy conditions can be expected
area wide.

A more significant change looks possible for the Saturday into
Sunday timeframe as a broad area of low pressure develops across
the Pacific northwest, pulling a Canadian cold front across the
Continental Divide. Snow levels down as low as 3000 feet look
possible by Sunday morning, which will create the potential for
snow even into many valley locations. The area most likely to see
impacts from accumulating snow still looks to be across northwest
Montana, especially near the Continental Divide and along Highway
2 between Essex and Marias Pass. A period of breezy east to
northeast winds also looks likely.

Forecast models continue to indicate cool and showery conditions
will last through much of next week, with periods of mountain and
mountain pass level snow and a mix of rain and snow in valleys.


.AVIATION...A weak upper level disturbance will bring scattered
showers across northwest Montana through the late morning hours.
Breezy westerly winds will develop across the Northern Rockies
this afternoon with gusts up to 25 knots being possible at KGPI,
KBTM, and KMSO from 24/2000 to 25/0100. Cloud cover will
decrease this afternoon and evening as a drier airmass begins to
enter the area and high pressure builds across the area tonight
into Thursday.



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