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BoulderCAST Daily – Fri 12/24/21 | Largely dry with highs in the 50s

TDetailed Forecast Discussion: he atmospheric river event, an intense one, is well underway as we speak. This morning and early afternoon, the axis of deepest lift and moisture is all across Colorado, but especially the southern portion, as indicated below. If you are planning to go skiing this Christmas holiday weekend, there won't be any shortage of fresh powder at …

Weekend Weather Snapshot: December 23, 2021

TDetailed Forecast Discussion: he primary forecast concern heading into the holiday weekend is the blast of winter coming to the Mountains! Snow is expected to ramp up rapidly through the day as extremely moist southwesterly flow arrives with the core of the atmospheric river reaching Colorado. Copious, near-record moisture will produce widespread orographic (upslope) snowfall beginning this morning in far …

BoulderCAST Daily – Wed 12/22/21 | Continued mild, but an atmospheric river will dump holiday snow in the Mountains

LDetailed Forecast Discussion: ittle has changed in the atmosphere across Colorado compared to yesterday. As a result, we'll have another mild day with elevated fire danger for portions of the Front Range. Gusts are expected to push above 30MPH in the Foothills, while temperatures soar into the low to even middle 60's around Boulder and Denver. There will be some …

BoulderCAST Daily – Tue 12/21/21 | 60’s & high fire danger for the first day of winter

HDetailed Forecast Discussion: appy Winter Solstice! It definitely won't feel like the first day of winter as well above normal temperatures are expected again today as a ridge of high pressure and downslope flow continue to dominate our sensible weather across most of the Rockies. Wave clouds have increased overnight in response to an uptick in moisture embedded in the …

BoulderCAST Daily – Sun 12/19/21 | Warmth takes over with upper 50s

TDetailed Forecast Discussion: he upper-level jet stream is located to the north and south of Colorado today, as indicated in the figure below of the national upper-level wind pattern. There is the polar jet over Montana into Minnesota, as well as the southern branch of the jet stream along the southeast US. Colorado is largely in between with little in …

BoulderCAST Daily – Sat 12/18/21 | A chilly afternoon but warmth is on the way for tomorrow

IDetailed Forecast Discussion: t was a cold morning across the Denver Metro area, with temperatures in the teens. It will remain a cold to chilly day across the region, under the cold airmass that is in place. With lots of sunshine, high temperatures will top out in the lower 40s. By this evening, the cold airmass will move off to …

BoulderCAST Daily – Fri 12/17/21 | A gusty afternoon followed by cold tonight

WDetailed Forecast Discussion: hile nothing like what we experienced a few days ago, it will be a gusty afternoon at times with speeds between 20 and 30 mph. At 700 mb (5,000 feet above the surface), a trough will be present over South Dakota into Kansas. As we are to the west of this trough, west-northwest winds will be over …

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