Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

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FXUS65 KBOU 110340

Area Forecast Discussion
National Weather Service Denver/Boulder CO
940 PM MDT Tue Oct 10 2017

Issued at 935 PM MDT Tue Oct 10 2017

Tranquil conditions prevail this evening and should stay that way
for the remainder of the night. Only blip in this picture comes
later tonight in the Front range foothills where downslope winds
may kick up. Warming aloft will strengthen the mtn top stable
layer causing a lee slope mountain wave to form. This should
enhance the westerly wind component with peak gusts probably no
more than 25-30mph in the foothills, and up around 35mph on the
higher exposed ridgetops. Otherwise light drainage breezes on the
plains under a clear sky. As for temperatures, readings not as
cool tonight with the onset of warming aloft. Warmest temperatures
are likely to appear along the base of the foothills, a produce of
downslope warming.

UPDATE Issued at 752 PM MDT Tue Oct 10 2017

No updates needed to the forecast, other than to load in the
latest observations and blend into the forecast. Will be keeping
an eye on possible gusty winds making it further down the
foothills than currently forecast - however believe current
forecast has a good handle on it at this point.


.SHORT TERM...(This evening through Wednesday)
Issued at 238 PM MDT Tue Oct 10 2017

A ridge of high pressure over the state will allow temperatures
to rebound to near normal tomorrow. Generally light winds and
drier conditions are expected through the evening. There will be
potential for some localized downslope winds along the foothills
tonight, with gusts to 35 mph. A lee surface trough is expected
to develop near the Front Range late tonight into Wednesday. This
will aide in moderating temperatures and reducing moisture.

.LONG TERM...(Wednesday night through Tuesday)
Issued at 238 PM MDT Tue Oct 10 2017

Models are in pretty good agreement through the period. A
shortwave will move north of Colorado in southwest flow early
Thursday, bringing a few clouds and increased winds over the
higher mountains. This will also push a little cooler air into
northeastern Colorado late Thursday. A larger trough will move
through on Saturday. This will generally be in a dry environment,
but some of the models do produce some light showers as this
trough passes. There should also be another cold front with a
period of wind Saturday or Saturday night and a little cooling.
Temperatures should recover into the early part of next week with
dry air and moderate westerly flow aloft.


.AVIATION...(For the 06Z TAFS through 06Z Wednesday night)
Issued at 935 PM MDT Tue Oct 10 2017

VFR conditions next 24 hours at Denver area air terminals. Plan
for light drainage winds through 15z/Wednesday under a clear
sky. By afternoon, could see a near stationary mid-level mtn wave
cloud form over and near the Front Range with the formation of a
leeside mountain wave. Any gusty winds the result of this mountain
wave should stay confined to the foothills. In the city, light
southerly winds will gradually shift to an southeast-east wind by
the afternoon with speeds generally under 12kts.




SHORT TERM...Cooper/Sullivan
LONG TERM...Gimmestad
AVIATION...Baker is the U.S. government's official web portal to all federal, state and local government web resources and services.