Showers to continue ahead and behind a Friday night cold front
Thursday, September 11, 2025
After a brief shower just after noon on this Thursday in Steamboat Springs, temperatures have cooled from the mid-seventies to the low seventies by mid-afternoon. The first cold front of our season will pass through Friday night, with showers continuing through Saturday ahead and behind the front. High temperatures will cool from the low-seventies on Friday to only the high sixties for the weekend. Sunday may be nice, or not, depending on the speed of the storm as it passes over the Rocky Mountains.
A large storm is lumbering through the West while the high pressure that was overhead this past week has been pushed to the central U.S. A robust plume of monsoonal moisture has been drawn overhead by southwest winds ahead of the storm and behind the high pressure, leading to the showery weather so far today as waves of energy eject from the storm.
More of the same is forecast for the rest of today, tonight, and Friday as the storm approaches, with strong thunderstorms possible. A cold front is then forecast on Friday night as the leading part of the storm rotates through our area. The ridge of high pressure will deflect the storm northward, even as additional energy behind the storm brings more showers, perhaps not starting until the afternoon, on a much cooler fall-like Saturday.
High temperatures will only reach the mid-to-upper sixties, below our average of seventy-four degrees, with showers continuing Saturday night. Snow levels decrease from 12,000′ Saturday morning to 11,000′ by Sunday morning, perhaps leaving a dusting of snow on the high peaks around us, but more likely on the higher mountains of central and southern Colorado, with even a few inches possible there.
We may see a nice Sunday if the storm continues moving through our area, but some weather forecast models have the storm lingering as high pressure to our east maintains its strength. Enjoy what will be our first fall-like weekend of the season, and take advantage of the windows of opportunity to get outside between the showers. I’ll have details on what looks like a nice start to the workweek, and possibly a midweek storm, in my next regularly scheduled weather narrative on Sunday afternoon.
Workweek to start warm and showery and end cool and showery
Sunday, September 7, 2025
Comfortable temperatures just above seventy degrees, on their way to the mid-seventies, and partly cloudy skies are over Steamboat Springs early this Sunday afternoon. Several weak disturbances in advance of a strong and cold storm well off the coast of northern California will bring a chance of showers to start the workweek, starting this evening. The advancing storm will bring breezy winds and increasing moisture by Thursday, with its eventual track determining how much cold air we see and whether showers linger into next weekend.
A ridge of high pressure is over the Rockies, while a strong and cold storm approaches the northern California coast. Several weak weather disturbances traveling through the ridge of high pressure will bring the chance for showers this evening and overnight, and again later Tuesday, but they won’t affect the high temperatures that are forecast to be just above our seventy-six-degree average.
The cold California storm is forecast to make landfall Monday night before lumbering across the Great Basin through the rest of the workweek. We should see increasing breezes from the south-southwest on Wednesday, with high temperatures being the warmest of the week, and rising to near eighty degrees.
The slowly advancing storm is forecast to push the ridge of high pressure over the Rockies eastward as it traverses across the Great Basin, allowing monsoonal moisture to be drawn northward by winds rotating clockwise around the high pressure. This moisture will be injected into the winds ahead of the cold storm, bringing a good chance for thunderstorms on Thursday and Friday.
The storm is forecast to slow by the end of the workweek before rotating to the northeast, but there is uncertainty regarding the extent of its eastward movement. Weather forecast models have trended toward more of the storm moving through our area, with cooler temperatures and showers lasting into next weekend, but that forecast could certainly change with such a large and wobbly system.
Snow levels could decrease to 11,000′ by Saturday morning if the coldest part of the storm moves overhead, and if moisture can hang around long enough, there may be a dusting of snow on the high peaks of the Zirkels.
Let’s hope the shower chances starting this evening materialize into wetting rains, and I’ll have more details about the Great Basin storm and how it may affect next weekend in my next regularly scheduled weather narrative on Thursday afternoon.
Cooler weather to arrive for the weekend with limited precipitation chances
Thursday, September 4, 2025
The sky has turned cloudy this Thursday mid-afternoon in Steamboat Springs with a temperature of eighty degrees. While cooler temperatures with highs in the mid-seventies are forecast for the weekend, precipitation chances now appear slim as the best monsoonal moisture stays to our south.
A wave of energy and cool air from the northern Canadian Plains is rotating around an impressive vortex of cold air sitting just north of the Great Lakes. Meanwhile, a ridge of high pressure extends along the West Coast and into Alaska as Hurricane Lorena lies just off the Baja coast. Moisture from the hurricane has moved northwards, but a shifting storm track will keep the best moisture over the Desert Southwest.
A cool front rotating through our area tonight may interact with the available moisture, perhaps bringing a brief shower or two overnight. High temperatures on Friday and the weekend are forecast to fall into the mid-seventies, around our average of seventy-seven degrees, and much warmer than the sixty-five degrees recorded last Friday.
While some of the hurricane moisture will be shunted southward for a brief time early Friday, a small circulation center, currently forming over Utah, may travel piecemeal over our area later Friday, bringing the chance of a shower or two.
Limited shower chances continue Saturday afternoon and evening as energy ejecting from the southern end of a trough of low pressure extending southward from the Gulf of Alaska crosses the Great Basin, dragging additional monsoonal moisture overhead.
The eventual fate of the former hurricane is uncertain, and some energy may be sheared toward our area by Sunday. This may interact with the energy still being ejected from the area of low pressure to our west, bringing more chances for showers at times on Sunday.
While the rain chances are nebulous, the smoke forecast is not. The hazy skies observed today are due to smoke from wildfires in California and the Pacific Northwest. Unfortunately, the NOAA Smoke model forecast indicates smoke will continue to rotate around the high pressure over the West, bringing hazy skies that will last through at least Saturday morning. The smoke model is run four times a day, so check it for the latest forecast.
A storm is forecast to develop and strengthen in the Gulf of Alaska this weekend, with pieces of the storm moving over the Pacific Northwest as early as Sunday. Wildfires may be helped or hurt by the incoming weather; while some precipitation is likely, there will also be increasing winds.
Enjoy the first weekend of meteorological fall, hope the shower chances are more robust than currently forecast, and check back for details on the possibility of increasing moisture near the end of next week from the landfalling Gulf of Alaska storm in my next regularly scheduled weather narrative on Sunday afternoon.
