Area forecast discussion 
National Weather Service Denver/Boulder Colorado 
222 PM MDT Monday Sep 1 2014 


Short term...(this evening through tuesday) 
issued at 144 PM MDT Monday Sep 1 2014 


There remains a moderate northwest flow pattern across Colorado as 
an upper trough sweeps across the northern plains states. Still 
seeing some of these gusty winds in the mountains with speeds up 
around 35 miles per hour. A drier airmass continues to filter in from Utah 
and Wyoming as total precipitable water imagery showing dryness pushing into 
northeast Colorado. Despite the dryness still expect a few 
thunderstorms over higher terrain along the cys ridge and far 
northeast plains along the tail end of the upper trough. Another 
area where isolated thunderstorms may develop is along the Palmer 
Divide through early evening with some moisture convergence. 
Behind the upper trough there is a weak frontal boundary which will 
move into northeast Colorado later tonight as winds shift northeast. 
There may be a few areas of low clouds later tonight behind this 
frontal boundary over the far eastern plains. 


For Tuesday...the flow aloft will shift more westerly with more 
dryness coming in from the west. Don't expect any storms in the 
County Warning Area on Tuesday. Temperatures will also continue the warming trend 
with readings in the middle 80s across lower elevations. 


Long term...(tuesday night through monday) 
issued at 144 PM MDT Monday Sep 1 2014 


Not much adjustment needed in the long term. A dry southwesterly 
flow aloft will over Colorado on Wednesday and Wednesday night...with 
temperatures prognosticated to hit 90 in Denver. On Thursday...the flow 
aloft will remain southwesterly with subtropical moisture starting 
to get entrained from Mexico and into Colorado late in the day. In 
addition...a cold front will move into northestern Colorado in the 
morning...which will cool temperatures back into the upper 70s. In 
addition...the easterly low level winds should start to usher in 
an increase in low level moisture. The trend through the rest of 
the period will be cooler with temperatures running a little 
cooler than normal...with a chance/slight chance of showers and thunderstorms 
through the weekend. The flow will be more southerly over the weekend. 
This will help better establish the plume of subtropical moisture 
into the state. There appears to be a Lee trough developing over 
eastern Colorado Sunday night into Monday...with drier southwesterly 
flow over Colorado by the start of next week. 




&& 


Aviation...(for the tafs through 00z Tuesday late afternoon) 
issued at 144 PM MDT Monday Sep 1 2014 


Expect light west to northwest winds over the terminals this 
afternoon before shifting to light drainage towards midnight. 
There is a weak frontal boundary which will approach terminals 
after midnight with maybe a weak shift to the north. This will be 
fighting drainage so expect it to be fairly short lived. VFR with 
mainly clear skies overnight and Tuesday. 


&& 


Bou watches/warnings/advisories... 
none. 
&& 


$$ 


Short term...entrekin 
long term...Cooper 
aviation...entrekin 






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