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Area forecast discussion 
National Weather Service Grand Junction Colorado
257 PM MDT Thu Oct 27 2016

Short term...(tonight through Friday night)
issued at 131 PM MDT Thu Oct 27 2016

The ridge of high pressure that is overhead today will shift to
the east tonight. Temperatures will remain well above normal and
warm on Friday. Winds aloft will start to increase and become
southwest. High level moisture moving through the western part
of the ridge will keep the high cirrus.

Moisture will increase Friday and Friday night. Expect cloud cover
to increase and high elevation showers to develop. Snow level
should remain high so only the highest peaks will receive limited
snow. Winds will also increase over the region as the pressure
gradient tightens in the Great Basin.

Long term...(saturday through thursday)
issued at 131 PM MDT Thu Oct 27 2016

Winds will persist as the upper level system ejects northeast
from the Great Basin to the northern rockies by Saturday. A ridge
of high pressure with the axis overhead Saturday afternoon and
evening. Showers will decrease Saturday.

The next system is moving onto the West Coast early Sunday and
quickly moves over the northern rockies by early Monday morning.
Best chances for preciptation will be over the north very late
Sunday through early Monday. Again the higher elevations are
favored although this system brings a colder airmass with it and
would expect snow levels to be lower.

Clearing after Monday with only a few lingering showers over the
high elevation Monday afternoon. The next system slides down the
California coast Tuesday. This system is taking a more southern track
although the track and timing is very uncertain as different
models very greatly.


Aviation...(for the 18z tafs through 18z Friday afternoon)
issued at 1127 am MDT Thu Oct 27 2016

Increasing winds will be the story of the day as the pressure
gradient tightens with an approaching trough. Southwest winds of
20-30 mph have already surfaced at higher elevations of
northwestern Colorado and will strengthen throughout the day today.
Expecting enhanced downvalley flow this evening which will turn
into enhanced upvalley flow on Friday morning. Not expecting any
low or mid level cloud cover today but by 18z Friday clouds will
begin to thicken and lower slightly. Ils breakpoints are not
expected to be reached through 18z Friday.


Gjt watches/warnings/advisories...



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