Area Forecast Discussion
Issued by NWS Grand Junction, CO

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FXUS65 KGJT 051006

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
306 AM MST Tue Dec 5 2017

.SHORT TERM...(Today through Wednesday)
Issued at 257 AM MST Tue Dec 5 2017

Northerly flow remains over the CWA this morning and will remain
that way through the short term period. No real weather to speak
of as high pressure starts to build in from the west. Our flow
will remain northerly keeping temperatures at their seasonal
norms for this time of year. Still some concern for some morning
fog to pop up for those favored valleys but as of right now, no
observations or webcams are picking anything up. The temperature
dewpoint spread is only 5 degrees for several areas though so as
we get closer to sunrise, the possibility will still exist. Valley
inversions are also likely through the long term period as colder
air remains pooled at the surface.  Through Wednesday, plenty of
sunny skies with more clouds towards the mountains as with cool
high temperatures and cold overnight lows.

.LONG TERM...(Wednesday night through Monday)
Issued at 257 AM MST Tue Dec 5 2017

A weak wave will drop south across the Rockies on Wednesday night
and Thursday bringing increasing clouds and some light snow over the
northern and central mountains. Moisture is limited so expect only
an inch or two along the higher elevations of the Continental
Divide. Otherwise, a broad, prolonged ridge of high pressure over
the western US will dominate the weather pattern over the region
through next week with dry conditions and seasonably warm
temperatures expected. Valley inversions will develop and strengthen
through the period.


.AVIATION...(For the 12Z TAFS through 12Z Wednesday morning)
Issued at 257 AM MST Tue Dec 5 2017

Some midlevel ceilings persist for the northern valleys with
observations reporting broken decks between 3 to 5K feet. Once the
sun comes up, these clouds will lift. KEGE, KASE and KGUC may see
some early morning fog but as of right now, no indication of any
forming. Did not include in TAF for that reason but will be
monitored and TAFs amended if fog does start forming. Outside of
that, plenty of VFR expected for most of the day.




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