Area forecast discussion 
National Weather Service Denver/Boulder Colorado 
330 am MST sun Nov 29 2015 

Short term...(today and tonight) 
issued at 330 am MST sun Nov 29 2015 

An upper low stretched from Utah/Nevada northeast into Wyoming 
has southwest flow over Colorado. A jet streak across the state 
currently will produce enough lift for light snow over the 
mountains...especially the northern mountains and foothills until 
about daybreak. There is enough lift as well that a few spots over 
the plains may see a few flakes and possible drizzle occur for a 
brief period. Low clouds over the plains is causing areas of fog 
along the foothills...and Palmer and Cheyenne ridges. Then 
downward qg vertical motion this morning will diminish the 
precipitation. Look for maximum temperatures today to be a couple 
degrees warmer than yesterday...yet still below normal for this 
time of year. 

An extra piece of energy currently over southern Colorado will 
round the low and push into Colorado this evening turning qg 
motion upward again. Look for snow to spread into the mountains 
this evening...then quickly push east across the plains. Models 
hinting at the heaviest amounts along and south of I-70. Forecast 
soundings show the cooling aloft to help the atmosphere 
destabilize. Upward qg vertical motion will be 
increasing...peaking around midnight. Overall...moisture is not 
all that much so snowfall amounts are not expected to be enough 
for any sort of highlight. Look for the mountains to see about 2 
to 6 inches overnight and 1 to 4 inches over the plains...again 
with heaviest amounts along and south of I-70. With the jet streak 
passing overhead...there is a chance for snow banding which will 
produce localized areas with slightly more snow. The snow will be 
decreasing from west to east after midnight. With the continued 
cold temperatures...this snow will be light and low density. 

Long term...(monday through saturday) 
issued at 330 am MST sun Nov 29 2015 

Upper level disturbance with q-g lift will continue to push to 
the northeast early Monday morning. This will take any lingering 
snow on the plains with it. Could see another half to one inch 
accumulation on the far eastern plains before ending. Then...long 
awaited clearing skies will occur from west to east during the 
course of the morning into early afternoon as downslope component 
and subsidence kick in. the mountains orographic 
snow showers will continue with moderate west/northwest flow aloft 
and sufficient moisture between 700 and 550 mb. The orographic 
snow model kept amounts light...generally between a trace and 3 
inches for Monday and those look good. Light snow is expected to 
continue over the mountains into Monday night before airmass dries 
and stabilizes sufficiently. 

With regard to wind...the Cross Mountain flow increases to around 
30-35 knots by late Monday night into early Tuesday morning. At the 
same time...a mountain top stable layer and reverse shear profile 
develop. Both of these factors along with an increasing Cross 
Mountain pressure gradient would all be favorable for occasionally 
gusty and stronger winds in/near the Front Range foothills. Have 
increased winds in the typically windier areas but dont see a high 
wind threat at this point given the marginal middle level flow. 

Tuesday through Thursday will feature upper level ridging over the 
central rockies. That will bring a gradual warming trend and dry 
conditions to the forecast area. Temperatures are expected to 
reach or exceed above normal levels Wednesday and Thursday. For 
Friday...could see a little more warming with an increase in 
southwest flow and Lee troughing in advance of next weather 
system. That one is still due in by next Saturday...bringing a 
chance of snow to at least the mountains by next weekend. Overall 
this next system appears to be rather weak as it moves into the 


Aviation...(for the 12z tafs through 12z Monday morning) 
issued at 330 am MST sun Nov 29 2015 

MVFR ceilings expected to lower a little into the early morning 
hours...with IFR conditions through about 16z. Patchy fog may 
exist as well. A weak disturbance aloft is allow patchy flurries 
and possible freezing drizzle to occur over the eastern plains. 
This should diminish after 14z...and coverage is not enough to 
include in any of the tafs except for kbjc. After that MVFR 
conditions are expected through the day. Another disturbance will 
push in after 00z with IFR conditions expected and snowfall 
expected. Snow will last through the night and into early Monday 
morning. 1 to 4 inches of dry and low density snow is expected 
across the area....with highest amounts found over the Palmer 
Divide and closer to the foothills. 


Bou watches/warnings/advisories... 


Short term...kriederman 
long term...barjenbruch 

National Weather Service Glossary of Abbreviations
Back to forecast page
Non-Expanded Version (with abbreviations)

Units: English | Metric

Find the Weather for any City, State or Zipcode, or Country:

U.S. State List | Severe Weather | Tropical Storms | Ski Conditions
United States | Canada | Central America | South America | Asia | Europe | Australia | Africa | Islands

Weather Underground

Copyright© 2015
The Weather Channel, LLC