Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

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FXUS65 KBOU 250929

Area Forecast Discussion
National Weather Service Denver/Boulder CO
329 AM MDT Sun Sep 25 2016

.SHORT TERM...(Today and tonight)
Issued at 325 AM MDT Sun Sep 25 2016

Weak upper level trof axis will be moving across Eastern Colorado
today with a continued subsident airmass in place. There still is
a fair amount of lower and mid level moisture over the mountains
and portions of the plains early this morning. The trend will be
for for this moisture to dissipate during the morning hours. There
will be a strong stable layer around 600mb this afternoon which
will keep a very stable and cool airmass in place. Temperatures
today will be cooler today with readings only in the 60s over the
plains. Skies look to be clear tonight as temperatures drop into
the mid 30s to lower 40s over the plains so patchy frost possible.

.LONG TERM...(Monday through Saturday)
Issued at 325 AM MDT Sun Sep 25 2016

An upper ridge over the west coast will spread east across the
state Monday and Tuesday as an upper cutoff low over the Baja
retrogrades and weakens to southern California. Look for dry and warming
weather, with temperatures returning to above normal under clear

On Wednesday, the upper low will pull up and absorb moisture from
an east Pacific disturbance and send it into western Colorado by
Wednesday night. This will bring a slight chance of showers and
thunderstorms to the mountains in the evening and overnight. Southwesterly
flow aloft will transport that system into the Great Basin on
Thursday to spread showers and a few possible thunderstorms across
the forecast area Thursday and Friday. Temperatures will remain
warmer than normal each day with the southwest flow aloft.

A large Pacific Northwest upper low will dig along the west coast
Saturday to increase southwest flow aloft. Moisture ahead of the
system will allow for a slight chance of afternoon showers and
possible thunderstorms.


.AVIATION...(For the 06Z TAFS through 06Z Sunday night)
Issued at 325 AM MDT Sun Sep 25 2016

VFR but still some broken mid level deck around 10000 feet agl
through mid morning. Surface winds will shift Northeast this
afternoon and then back to a southerly wind component by later
this evening.




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