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514 FXUS65 KBOU 142332 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 432 PM MST Sun Dec 14 2025 .KEY MESSAGES... - Unseasonably warm and dry through Tuesday, with generally light winds outside of the higher elevations. - Remaining warm Wednesday with strong winds expected, leading to fire weather concerns for portions of the foothills and plains. - Light to moderate snow expected Wednesday afternoon into Thursday for the mountains. && .SHORT TERM /Through Monday/... Issued at 213 PM MST Sun Dec 14 2025 Upper level ridging over Colorado flattens during the day Monday as northwest flow aloft begins to increase. For tonight, west winds in the higher foothills and Front Range Mountains increase, with gusts to 40 mph possible. Elsewhere, we are looking at relatively light winds. Temperatures in the mountain valleys and lower lying areas across the plains will be cooler spots, with lows in the teens and lower 20s. On Monday, it will be mild again with temperatures well above normal. High across northeast Colorado will reach the upper 50s to mid 60s. Cross sections show some high level moisture, mainly during the morning, with decreasing high clouds during the afternoon. Expect for those typical breezy locations in the foothills and mountains, light winds will prevail Monday. && .LONG TERM /Monday night through Sunday/... Issued at 213 PM MST Sun Dec 14 2025 The flow aloft will become more WNW on Tue with cross-sections showing only some mid and higher level moisture embedded in the flow. With downslope flow over the area, highs will remain well above normal with a few record highs possible at lower elevations. On Wed, an upper level trough will move across the area late in the aftn thru Wed night. Cross-sections show increasing moisture in the mtns by Wed evening with favorable orographic flow. In addition, a rather stg upper level jet will move into the area which may lead to some heavier banded snowfall in some mtn areas. In addition, it will be very windy as well. At lower elevations, downslope low level flow will remain in place thru the aftn, with dry conditions along with another day of record highs possible around the Denver area. Meanwhile, a bora type front will move across nern CO by late aftn into the evening hours. As a result, may see strong winds develop across portions of the foothills and plains as this feature moves across. For Thu into Thu night, the flow aloft will continue WNW with some moisture embedded in the flow. May see orographic light snow continue in the nrn mtns mainly Thu aftn and night. At lower elevations it will be dry and windy with highs dropping back to more seasonal levels. Looking ahead to Fri, the flow aloft will become more westerly. This will lead to dry conditions along with warmer temperatures as downslope flow redevelops. By Sat, another fast moving system may affect the area bringing a chc of snow to the mtns with another round of wind at lower elevations. && .AVIATION /00Z TAFS through 00Z Tuesday/... Issued at 419 PM MST Sun Dec 14 2025 VFR conditions expected through the TAF period. Light and variable winds will persist before transitioning to drainage at KDEN/KAPA. KBJC will see light westerly winds for the overnight hours. Main question for tomorrow will be if a cyclone redevelops in the afternoon that would shift winds more to the northeast than portrayed in the current TAF. Despite the uncertainty with wind directions roughly between 21-1Z, winds are expected to be 10kts or less by late morning through the afternoon. && .FIRE WEATHER... Issued at 1258 PM MST Sun Dec 14 2025 Elevated fire conditions will be possible in the northern foothills and across the plains near the Wyoming-Nebraska border Tuesday afternoon due to gusty winds and dry conditions. Elevated to critical fire conditions will develop on Wednesday across the foothills and plains due to expected strong winds and continued dry conditions. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...12 LONG TERM...RPK AVIATION...9 FIRE WEATHER...RPK