Area Forecast Discussion
Issued by NWS Grand Junction, CO

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FXUS65 KGJT 170542

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
1142 PM MDT Sun Apr 16 2017

.SHORT TERM...(Tonight through Monday night)
Issued at 255 PM MDT Sun Apr 16 2017

High cloudiness will continue to increase through the short term
period ahead of the next system impacting the western US. The
first piece of energy will move northeast across Idaho and Montana
on Monday with little impact for our area. As the gradient
tightens slightly on Monday expect breezy conditions to develop
during the afternoon hours across the forecast area.

.LONG TERM...(Tuesday through Sunday)
Issued at 255 PM MDT Sun Apr 16 2017

The main trough of low pressure will move into the Great Basin on
Tuesday with clouds and winds increasing ahead of this system.
Models are showing shower activity and some thunderstorms
developing on Tuesday afternoon and evening across the northern
sections before spreading south and east over the region Tuesday
night. The focus of the storm will remain across Wyoming but most
locations should see some short duration frontal precipitation
Tuesday night into early Wednesday as the cold front passes. Snow
levels will drop Tuesday night to around 9000 feet with the best
chance for moderate accumulations by late Wednesday over the
higher elevations across the north, with only light accumulations
expected in the central and southern mountains. After a brief
respite, another Pacific storm system will move across the area
later Thursday into Saturday with another round of valley rain and
higher elevation snow. This storm system appears to be slightly
colder than the mid-week system.


.AVIATION...(For the 06Z TAFS through 06Z Monday night)
Issued at 1142 PM MDT Sun Apr 16 2017

Benign weather will continue across western CO and eastern UT
with VFR conditions prevailing at all TAF sites. Southwesterly
flow will increase after 18Z as a Pacific storm moves inland. This
will result in an increase in mid and high clouds as well as some
gusty winds mixing down to the surface. Gusts 30 to 40kts will be
possible especially over the higher terrain.




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