Area Forecast Discussion
Issued by NWS Grand Junction, CO

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FXUS65 KGJT 220941

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
341 AM MDT Sun Oct 22 2017

.SHORT TERM...(Today through Monday)
Issued at 332 AM MDT Sun Oct 22 2017

Some high clouds are moving overhead, especially along the divide,
thanks to a weakening portion of the polar front jet. A few clouds
also look possible along the CO/WY border this morning and early
afternoon but absolutely no chance for any precipitation. In fact,
the jet stream has begun shifting northward and with high
pressure building in, it will shift even further into Canada for
much of the week. So with high pressure building in, we can
return to gorgeous fall weather with temperatures slowly warming
and plenty of sunny skies. Expect a few gusts for the northern
valleys today but outside of that, no flys in this ointment.
Similar conditions tomorrow except for the Elk and Park ranges
where favorable northwest flow may allow a few flurries to form
Monday morning. By noon, the whole CWA should be dry as high
temperatures bump up a few degrees.

.LONG TERM...(Monday through Saturday)
Issued at 251 PM MDT Sat Oct 21 2017

The ridge of high pressure will continue to dominate the western
CONUS late Monday and Tuesday before the ridge flattens in response
to an approaching Pacific trough around midweek. While extended
models still differ on the track of this system, the northern and
central portions of our CWA appear to be favored for increased
clouds and the chance for showers as the trough digs into Colorado
on Thursday. 700mb temperatures associated with this feature
generally range from -6 to -12 degrees C on the latest GFS run which
could see snow levels dropping down to mountain floors by daybreak
Friday as this nice shot of cold air infiltrates the region.
Northwesterly flow will quickly set up aloft in the wake of this
storm as a strong ridge of high pressure once again rebuilds to
our west which would see the return of drier and warmer conditions.


.AVIATION...(For the 12Z TAFS through 12Z Monday morning)
Issued at 332 AM MDT Sun Oct 22 2017

No aviation concerns as high pressure builds in. VFR conditions
continue for the next 24 hours.




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