Area forecast discussion 
National Weather Service Denver/Boulder Colorado 
1028 am MDT Friday Oct 9 2015 

issued at 1028 am MDT Friday Oct 9 2015 

Patchy fog has dissipated on the plains with mostly sunny skies 
prevailing. Clouds are advancing in from the north as expected... 
and they will gradually spread into the area during the afternoon 
hours. Should still see sufficient sunshine though to bring mild 
temperatures and pleasant autumn weather. Forecast on track. 


Short term...(today through tonight ) 
issued at 325 am MDT Friday Oct 9 2015 

Low clouds and spotty light rain showers on the way out of the 
County Warning Area at this time with the departing shortwave trough. Not so for 
the fog now forming in low lying areas such as along the South 
Platte river east Greeley...around Akron and Limon and in South 
Park with clearing skies. This clearing will spread southward 
through the morning hours as drier air mixes down from aloft. 
Upstream over western Wyoming models show yet another much weaker 
shortwave trough...marking the leading edge of warmer air aloft. 
Models show this wave passing over the Front Range around midday 
accompanied by a band of middle and high level clouds. They/ll most 
likely be altocumulus standing lenticularus and standing lenticular cirrocumulus with mountain top static stability on the 
increase with warming aloft. Front Range ridge tops and upper 
foothills may also see a period of gusty west-northwesterly winds this 
afternoon after passage of this pertabation. Overnight...drying 
and warming aloft will continue as the upper ridge building to 
our west-southwest begins to exert itself on these parts. 
Lastly...should see high temperatures near to slightly above average. 
However should these gusty westerlies manage to move down the 
Front Range could see a bump up in temperatures along the base of the 
foothills. Tonight/S lows are forecast to run anywhere from 8-12 degrees 
f above average...another sign of much warmer weather ahead. 

Long term...(saturday through thursday) 
issued at 325 am MDT Friday Oct 9 2015 

The upcoming week will be characterized by dry conditions and 
much above normal temperatures over northern Colorado. For 
Saturday...high pressure ridge aloft will build over Colorado as 
temperatures rise well into the 80s across the plains. Near 
record temperatures will be possible at some locations but expect 
the Denver record of 89 degrees will come up a few degrees short. 

The ridge flattens on Sunday as a fast moving trough moves across 
the northern rockies and brushes northern Colorado on Sunday. The 
flow aloft will increase during the day on Sunday from the west 
with passage of the trough. Cross sections showing increasing gusty 
winds Sunday am as cross barrier flow increases to around 30kt. 
Could see some gusts up to 40 miles per hour over east slopes and locations 
near border areas of Wyoming and Nebraska. Some elevated fire 
weather concerns given the winds and dry conditions but humidities 
look marginal at this time. The associated cold front with the 
trough moves across northeast Colorado Sunday night with cooler 
temperatures expected on Monday in the wake of the front. Airmass 
with this trough looks too dry to mention any precipitation as low levels 
remain dry. 

From Monday through Thursday...Colorado will be under a moderate 
northwest flow pattern. Airmass will remain dry with warmer 
temperatures again through middle week. 


Aviation...(for the tafs through 18z Saturday morning) 
issued at 1028 am MDT Friday Oct 9 2015 

VFR conditions will persist through Saturday morning. Light and 
variable winds are expected to turn more easterly around 5-10 
knots through the afternoon. Winds will then transition back to 
southerly around 10 knots 02z-06z. 


Bou watches/warnings/advisories... 


short term...Baker 
long term...entrekin 

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