Beautiful weekend with showers early and late next week

Thursday, October 20, 2016

A large storm off the West Coast has pumped up a ridge over the western U.S. promising a beautiful weekend with warm temperatures. Additional energy from the Aleutians moving southward this weekend will force the storm to dig southward along the coast, and increasing southwest flow ahead of the storm will direct some tropical and subtropical moisture over the Four Corners states on Monday and Tuesday. The end result will be an increasing chance of rain showers on Monday and early Tuesday for the Steamboat Springs area before drier weather returns as soon as Tuesday afternoon or evening.

There is a fair bit of uncertainty with the evolution of the West Coast storm, with the latest run of the models keeping most of it offshore through midweek, allowing the ridge of high pressure to rebound and bringing warm and sunny weather for Wednesday and Thursday.

If current model forecasts hold, the trough will elongate and undergo a modest split, with the southern portion making landfall around the end of the work week and directing another round of tropical and subtropical moisture across California and into the Great Basin. It is unclear whether this moisture and energy will be close enough to the Steamboat Springs area to threaten warm showers next weekend or whether the western ridge will be strong enough to deflect the weather to our north.

 

Rain showers, snow showers and cold followed by warming into the weekend

Monday, October 17, 2016

A couple of waves of energy moving within a strong Pacific jet stream will affect our area today and later Tuesday into Wednesday. Though I just saw some snowflakes in the valley, the rain-snow line looks to be around 7500′ - 8000′ and the current rain showers, mixed with snowflakes at times, should persist through most of the afternoon.

We should have a break in the precipitation tonight lasting into Tuesday afternoon before a stronger wave brings a cold front through the Steamboat Springs area late in the afternoon or early in the evening. Snow showers, moderate to heavy at times, should occur overnight Tuesday even in the valley, likely leaving accumulations on the grassy areas and possibly even the roadways under the heavier showers.

Wednesday will be quite chilly, especially with a trailing wave keeping the possibility of some light and non-accumulating snow showers over the area through the day.

Thursday should be a sunny and cool day with warming afternoon temperatures as a flat ridge builds behind the departing storm, with the coldest morning temperatures of the season if skies clear by sunrise.

The ridge will bring dry and pleasant weather with much warmer temperatures for Friday and the weekend, with a dry wave passing over the top of the ridge knocking temperatures back a bit on Sunday.

A complicated and uncertain upper level pattern then evolves off the West Coast early in the next work week, possibly bringing the threat of precipitation back to the area, especially by midweek.

Forecasts trending drier for the weekend and next week

Thursday, October 13, 2016

Cool air from western Canada deposited in the Gulf of Alaska has created persistently stormy weather there. Though a storm is currently pounding the Pacific Northwest, models have trended weaker with any energy forecast to cross the Great Basin and affect the Steamboat Springs area for the weekend and next week. As a result, Friday will be dry with breezy west to southwest winds as the Pacific Northwest storm moves to our northwest.

Clouds will likely appear on Saturday with breezy conditions again as energy grazes our area, with showers confined to the very northwestern corner of Colorado.

Similar conditions are advertised for Sunday with less cloudiness likely.

Monday should start dry, but some energy from the Pacific makes it close enough to our area to bring a cool front through the area later in the day , threatening showers for the afternoon and into the evening.

Tuesday looks to be dry before another pulse of Pacific energy brings another mostly dry cool front through the area on Wednesday.

Models advertise the Gulf of Alaska storm elongating southward along the West Coast next week, pumping up a ridge of high pressure over the Intermountain West that should create beautiful and warm weather for the end of the work week and heading into the weekend.

After showers on Tuesday, pattern change threatens the weekend and beyond

Monday, October 10, 2016

The sharp and unstable ridge along the Canadian coast has materialized as advertised in the last forecast, forcing cool air from western Canada southward into the Pacific Northwest. Additionally, some Pacific energy will undercut the ridge and allow several shallow waves to moves across the area and threaten rain showers as soon as late this afternoon and overnight.

Increasing moisture and instability ahead of the advancing Pacific Northwest storm and additional disturbances undercutting the ridge brings a good chance of rain showers to the Steamboat Springs area on Tuesday, especially later in the day, with high snow levels.

Wednesday is forecast to be cooler and dry before another Pacific wave undercuts the rapidly disappearing ridge off the Canadian coast. Models have trended weaker and further south with the undercutting energy likely keeping showers to our south on Thursday.

While Friday currently looks dry and breezy, the breakdown of that unstable ridge allows more substantial Pacific energy to impinge on the West Coast and cool western Canadian air to pour into the Gulf of Alaska, ushering in a likely long-lasting and more active weather regime for the West. Models are now more aggressive in bringing another relatively warm wave across our area early in the weekend, with some forecasting breezy conditions and showers with high snow levels on Saturday.

Sunday looks to be an in-between day before a much colder and stronger wave threatens precipitation with snow levels approaching the valley bottom early in the next work week.

A couple of chances of precipitation next week after a nice weekend

Friday, October 7, 2016

Temperatures are rebounding nicely in Steamboat Springs today after a chilly start under clear skies behind the departing storm system. After another chilly start Saturday morning, temperatures will continue to warm through the weekend as a flat ridge moves over the area.

A weak wave moving south of us from the southwestern U.S. may bring some clouds to the area on Sunday, but any precipitation should be confined to southern Colorado.

By Monday, a wave from western Canada will move southward along a sharp and unstable ridge along the Canadian coast and phase with some Pacific energy undercutting the ridge and moving across the desert southwest. Though the cool air from Canada looks to affect mainly the Front Range on Tuesday, increasing moisture and instability ahead of these disturbances brings a chance of precipitation to Steamboat Springs later Monday and especially through Tuesday with likely high snow levels. 

At this point, Wednesday is forecast to be dry before more substantial Pacific energy undercuts the rapidly disappearing ridge off the Canadian coast. Though models have trended weaker with the undercutting energy traveling over our area by Thursday, there may still be a chance of showers with high snow levels.

Interestingly, the breakdown of that unstable ridge also allows cool air from western Canada to move westward into the Gulf of Alaska by late in the work week, pumping up a temporary ridge over the Intermountain West and advertising another beautiful weekend. The storm that develops in the Gulf of Alaska over that weekend my affect our weather the following work week.

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