Area Forecast Discussion
Issued by NWS Grand Junction, CO

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FXUS65 KGJT 181721

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
1021 AM MST Sat Nov 18 2017

.SHORT TERM...(Today through Sunday)
Issued at 357 AM MST Sat Nov 18 2017

Cold front is through...winds are tapering down and skies are
clearing early this morning. Besides some light orographic snow
hanging around the peaks this storm is off to the east and the
challenge now will be temperatures. Very dry air in place and
already this morning the mercury is dropping faster and farther
than anticipated. Have adjusted highs and lows the next few
morning in the usual cold spots with fresh snow...colder air in
place...then building inversions as warmer air drifts back
overhead with a flat ridge building aloft. Skies should be mainly
sunny/mainly clear with a just a few high clouds drifting through
the north today and tonight. The clouds may thicken a bit for
Sunday as a dry system passes to our north.

.LONG TERM...(Sunday night through Friday)
Issued at 357 AM MST Sat Nov 18 2017

Dry northwest flow will dominate the weather pattern through
Monday. Monday night and shortwave will ride over the area with
just enough moisture and uplift to produce showers over the
northern CO mountains through Tuesday, and extend south to the
I-70 corridor east of Eagle and Aspen Tuesday night and Wednesday
morning. The rest of the forecast area will remain dry with a slow
warming trend. Beginning Wednesday evening high pressure will
build back over the area and dry conditions will return to the
northern and central mountains of CO. The next cold front will be
over the northern Rockies and approaching the area Friday. This
will flatten the ridge and cause west winds to increase.


.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1019 AM MST Sat Nov 18 2017

VFR conditions expected at all TAF sites for the next 24 hours.
Winds aloft will be out of the WNW from 30 to 40 kts with valley
winds remaining light and terrain driven through midday Sunday.




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