Author: BoulderCAST Team (Page 8 of 43)

This post had major contributions from at least two members of our team. The more meteorologists the better, right?

Saturday AM Update: A challenging, uncertain forecast remains as rain changes to wet snow across the Front Range!

Rain and some snow have already begun across the Front Range, but as of writing Saturday morning, the exact outcome of the moisture-infused winter storm moving in now remains in question. We provide the latest forecast (nowcast?) for rain and snow unfolding now, including some minor adjustments to our snowfall forecast map and storm timeline. Brace for a soggy and snowy Saturday!

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Winter Weather Update: A warm El Niño storm is headed our way this weekend with snow amounts remaining somewhat uncertain

After five straight sixty-degree days with quiet weather, things will turn cooler and unsettled for the weekend ahead as a sloppy El Niño storm moves through bringing a mix bag of precipitation to the Front Range.  While there is still plenty of uncertainty in the exact outcome for Boulder and Denver, we discuss the latest forecast details including when the rain will start (including some rumbles of thunder), when and where it will change over to snow, which ski resorts will be rolling in powder this weekend, and most importantly — the expected moisture and snowfall amounts across the Front Range area. Let’s dive in!

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Arctic Blast Sunday PM Update: Widespread snow & even colder temperatures move in Monday

Just when you might have thought things were turning warmer, a secondary Arctic front and more snow will arrive to the Front Range on Monday. Additional snow accumulations and slick travel are expected during the day with the coldest temperatures we’ve seen yet developing Monday night. Let’s take a look at the latest as the ongoing Arctic blast delivers one final blow on MLK Day!

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Arctic air is inbound! Plan now for a prolonged period of dangerous cold in the Front Range starting Friday evening!

The most significant Arctic outbreak for the Front Range since 2022 is brewing! The initial cold front will blast through Friday early evening ushering in sub-zero wind chills which will persist all the way into at least Tuesday morning. While the extreme cold is all but certain at this point, the snowfall potential is a bit trickier of a forecast as there will be three separate chances for snow mixed into the polar plunge. However, the Mountains will be getting absolutely showered in powder. Let’s take a look at bitter cold and snowy forecast heading into the MLK holiday weekend.

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December 2023 Graphical Weather Review: The most abnormally warm we’ve been since the lead up to the Marshall Fire

December 2023 was yet another warm month in Boulder, the same fate which has befallen four out of the last five months. Despite the lack of appreciable snow events, precipitation ended just a hair above normal for the month since December is typically one of our driest months of the year. Here’s a quick and colorful graphical recap of our weather during December and how it relates to climatology.

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Holiday Snow Update: Rain transitions to snow Saturday evening, most accumulation over by Christmas Eve morning

Winter weather is on-track to arrive into the Front Range Saturday evening into Sunday just in time to give most of us a white Christmas! Two vastly different storm systems will be moving in from opposite directions later in the day Saturday with widespread rain changing to snow across the Boulder and Denver area. While we still have some lingering concerns regarding temperatures and exactly when rain will switch-over to snow, our forecast confidence has grown over the last few days. In this final forecast update, we discuss the storm’s timeline, how much snow will accumulate across the area, the probability the snow sticks around into Christmas Day, and how it will impact holiday travel the next few days. We’ve even got another chance of snow coming the day after Christmas. Whew! Read on for all the details.

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Winter Weather Update: Forecast uncertainty still abounds heading into the holiday weekend, but things are starting to come into focus

We’ve got a few more mild days ahead to end the work week, but as promised, winter will return for the holiday weekend in what is shaping up to be a challenging forecast indeed. We are finally starting to see better agreement in the various weather models, but things are still far from certain. Our weather will begin to trend downhill on Saturday with cooler temperatures and a chance of rain showers. Saturday night rain will change to snow with snow accumulation likely for all heading into Christmas Eve. Exact snowfall amounts and the timing of everything are still being worked out, but here’s our latest thoughts on the approaching holiday winter storm.

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