Area Forecast Discussion
Issued by NWS Grand Junction, CO

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FXUS65 KGJT 161730

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
1130 AM MDT Sun Apr 16 2017

.SHORT TERM...(Today through Monday)
Issued at 235 AM MDT Sun Apr 16 2017

Little change from yesterday as zonal flow remains over the area.
The only major differences will be a bump in high temperatures and
also an increase in cloud cover. Clouds will increase from about
noon onwards favoring the the I-70 corridor northward as well as
the central mountains. These clouds will be fairly high though so
no concern for any precipitation. Expect the occasional gusty
wind of 20 mph or so in the afternoon.

Late tonight into Monday morning, a closed low will come ashore
over Oregon with attendant precipitation for much of the state and
northern California. The low will quickly open up and become an
open trough that will shift to the northeast into Idaho and then
Montana. Guidance not showing any precip for our CWA though plenty
of clouds will hang around. The gradient also looks to tighten
somewhat as the trough passes to our north so expect winds to pick
up a little in the afternoon hours.

.LONG TERM...(Monday through Saturday)
Issued at 229 PM MDT Sat Apr 15 2017

A break in the clouds looks likely Tuesday with the next weather
maker right behind it to the west. Winds are expected to increase
on Tuesday ahead of this next weather system. A fairly zonal
trough is progged to increase available moisture to an
unseasonably high PWAT value of around 0.6 inches across the
region on Tuesday night, accompanied by a cold front that is
forecast to pass through Tuesday night into Wednesday. This system
has H7 temps dropping to around 0 to -2C during its min, so snow
level will remain quite high and snow accumulations would be minor
if at all on high mountain passes. After this front passes on
Wednesday, Utah and Colorado will remain in an active zonal
pattern with near seasonable temperatures persisting and a chance
of showers through the remainder of the work week. At this time,
high pressure is expected to return over the weekend and turn the
temperature dial back up.


.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
Issued at 1127 AM MDT Sun Apr 16 2017

Weak high pressure is in place over the forecast area today and
will promote VFR conditions for the next 24 hours. High clouds are
moving into the area but will not impact airport operations. Winds
will be diurnally driven and may be locally gusty at times.




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