Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

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FXUS65 KBOU 130307

Area Forecast Discussion
National Weather Service Denver/Boulder CO
807 PM MST Sun Nov 12 2017

Issued at 759 PM MST Sun Nov 12 2017

No changes needed to previous fcst.  Abundant high
clouds will continue overnight.  Areas of fog will
eventually develop east of a Limon to Akron later tonight
and linger thru 14z on Mon.


.SHORT TERM...(This evening through Monday)
Issued at 155 PM MST Sun Nov 12 2017

An upper level ridge will be over the area through Monday while at
the surface, a lee trough lies along the urban corridor. High
level clouds are streaming in from the west riding along a jet.
These clouds will continue to increase tonight, helping to warm
overnight lows. Winds aloft will be increasing overnight. Modeled
cross sections continue to show 45 kt at mountain top which will
be pulled east down over the foothills overnight. Expect gusts of
45 to 55 mph through the night. Over the eastern plains, moisture
will advect in on southeasterly winds. Areas of fog will develop
by midnight along and east of a line from Limon to Akron to
Sterling. High cloud coverage may limit the fog formation or at
least the thickness, so no highlights being sent out now. Towards
morning, some of the westerly downsloping winds may shove the fog
back east and possibly out of the forecast area before sunrise.

On Monday, with warmer overnight lows and warm advection moving in
under the ridge, highs will likely be 10 to 20 degrees warmer over
today`s readings. Winds will be similar with the leeside trough
remaining along the urban corridor.

.LONG TERM...(Monday night through Sunday)
Issued at 155 PM MST Sun Nov 12 2017

Much of the upcoming week will be characterized by a zonal dry
westerly flow over Colorado. Expect gusty winds over higher
exposed mountains at times. A weak wave will brush northern
Colorado on late Tuesday afternoon and night with an associated
cold front. Now it looks too dry for any showers in the mountains
but cooler temperatures behind the front for Wednesday.
Temperatures will still be above normal across lower elevations.

Next stronger system expected to move across Colorado in the late
Thursday and Friday time frame with a better chance for snow in
the mountains and even a slight chance for precip over lower
elevations. There are still some timing differences between the
European and the GFS with the European being slower which could
keep precip in longer on Friday.


.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 759 PM MST Sun Nov 12 2017

Winds will remain mainly ssw overnight but may become more
swly after 09z. Otherwise VFR conditions will continue.




SHORT TERM...Kriederman
LONG TERM...Entrekin
AVIATION...RPK is the U.S. government's official web portal to all federal, state and local government web resources and services.