Snows restart Sunday after several days of nice weather
Thursday, January 12, 2023
Temperatures are around twenty degrees in the town of Steamboat Springs and in the low teens near the top of the Steamboat Ski Resort under rare sunny skies late this Thursday morning. Snows will temporarily stop for several days as we head into the long Martin Luther King Day Jr. weekend before starting again on Sunday and lasting through most of the following week.
Before looking ahead, the last storm that started Tuesday and ended last night left far more snow that I anticipated in the Sunday weather narrative, leaving 18” at mid mountain and an incredible 34” up top, though winds yesterday adversely affected snow quality in most places on the upper mountain.
The Steamboat Springs area and associated north-central mountains have done very well from these relatively warm storms associated with decaying atmospheric rivers (long and relatively narrow streams of warm, moisture-laden air from the subtropics and possibly the tropics) this winter, despite winds being from the usually unfavorable southwest direction. While making for difficult weather forecasts, the moisture sure is welcome, with the snow water equivalent in our Yampa-White-Little Snake basin 56% above the 30 year median. The current moisture content is in the top 10% of the last 30 years and equal to what we usually see in mid-February!
Now, a ridge of high pressure has formed over the Intermountain region ahead of a large storm currently extending south from the Gulf of Alaska to east of Hawaii and incorporating yet another atmospheric river. We’ll see a break in the snowfall through Sunday morning as the ridge of high pressure is forced eastward by the next storm, with more sun than not from today through Saturday before clouds increase in earnest on Saturday night ahead of the incoming storm.
This storm looks to come through in pieces, with the best chance for accumulating snows Sunday night. Unsettled weather with continued snow showers looks to follow for the beginning of the week before a piece of another large storm currently near the Dateline barrels into the West Coast on Monday and may affect our weather around midweek.
So enjoy the nice start to the holiday weekend, and be sure to check back on Sunday afternoon where I’ll have more details on the incoming storms along with some snowfall guesses.
More snow on Tuesday and Wednesday
Sunday, January 8, 2023
Temperatures are in the mid-teens at all elevations in the Steamboat Springs area with high clouds filtering the sunshine on this Sunday mid-morning. High temperatures will warm toward the thirties in town and the twenties near the top of the Steamboat Ski Resort today ahead of several Pacific disturbances that will bring good snowfall chances back to our area on Tuesday and Wednesday. The storms will be relatively warm, especially on Tuesday, before a ridge of high pressure builds over the Rockies and brings nice weather to our area starting on Thursday and lasting into next weekend.
A powerful storm currently located in the Gulf of Alaska has incorporated a relatively narrow stream of moisture from north of Hawaii along its southern end. This so-called atmospheric river will be carried inland first by several waves of energy rotating through the Gulf of Alaska storm and then the storm itself, even as it is replaced by and even stronger storm currently developing south of the Aleutian Islands.
Ahead of that, a nice day is in store today thanks to a ridge of high pressure just east of our area, with high temperatures in town reaching toward the thirties, about five degrees above our slowly rising daily average of 27 F.
The first disturbance ejecting out of the Gulf of Alaska storm will move by tonight behind the departing ridge of high pressure and will bring some clouds and snow showers to the higher elevations, with minimal accumulations expected.
We’ll see some more sun on Monday morning ahead of the next stronger disturbance that is forecast to move overhead from about Monday night through Tuesday afternoon. This disturbance has trended stronger in the last few weather forecast model iterations, though the timing of the best snowfall is uncertain, and I would expect 3-6” of accumulations at the mid-mountain snowstake.
The parent storm in the Gulf of Alaska is forecast to move bodily inland by the eastward-moving and still developing storm from south of the Aleutian Islands that is forecast to take its place. Unfortunately there is more weather forecast model uncertainty with this storm as it is forecast to intensify either over our area, with more snowfall, or just to our east, with less snowfall.
Best guess right now would be an additional 3-6” of snowfall that would occur mostly during the day Wednesday, with cooler temperatures filtering into our area during the storm and overnight. If the cooler air arrives in time, snowfall may become fluffier and less dense as the storm ends by Wednesday night.
A large ridge of high pressure is then forecast to build over the Intermountain West ahead of the still-developing Pacific storm currently forecast to make landfall along the West Coast late in the weekend. So right now, after the midweek storm, we should see more sun than not that looks to last into and possibly through next weekend. I’ll talk about that as well as the possible return of stormy weather in my next regularly scheduled weather narrative on Thursday afternoon.
Next storm lasts from Friday into Saturday morning
Thursday, January 5, 2023
Temperatures are in the mid-teens at all elevations late this Thursday morning in the Steamboat Springs area with a rare appearance by the sun. Clouds will increase later today ahead of our next storm starting Friday morning and lasting into Saturday morning. Snowfall rates around an inch per hour at times may make travel difficult over Rabbit Ears Pass from about Friday noon into Saturday morning. The sun then makes a return visit behind the storm for later Saturday and Sunday.
A transient ridge of high pressure over the Rockies will soon be dislodged by a storm currently bringing a variety of wintry precipitation to the Sierras. While the storm will weaken as it crosses the Great Basin tonight, there will be plenty of it left to bring snowfall back to our area starting early tomorrow morning.
Light snow showers beginning Friday morning will give way to moderate and even heavy periods of snowfall by the afternoon as the cold front associated with the storm passes through by noon and winds shift to be from the southwest to our favorable northwest direction. Good moisture and cooling temperatures through Friday and overnight will drop temperatures at the top of the Steamboat Ski Resort to around ten degrees by Saturday morning, allowing the snowfall to become fluffier and less dense.
Snowfall rates as high as an inch to an inch and a half per hour will persist from Friday noon through the overnight before they quickly taper off Saturday morning. We’ll could see 7-14” of snowfall by the Saturday morning mid-mountain ski report, with around half of that occurring during the day Friday and an additional several inches after the report, depending on how quickly the atmosphere dries behind the storm. Travel over Rabbit Ears Pass will likely be difficult at times from about noon on Friday into Saturday morning.
The sun looks to make a return appearance, first at the lower elevations in the Yampa Valley as soon as Saturday afternoon, and more broadly on Sunday after a batch of clouds moves through Saturday night.
The next work week looks to start dry, though we may see some very light snow showers at the higher elevations early Monday as a weak storm passes north of our area. Another disturbance looks to affect our weather by midweek, so stay tuned to my next regularly scheduled weather narrative on Sunday afternoon where I’ll have more details about that possibility.
Early week storm trending slower and weaker ahead of a break later Wednesday
Sunday, January 1, 2023
The snows have temporarily stopped over a cloudy Steamboat Springs this Sunday mid-afternoon with temperatures in the upper thirties in town and upper twenties near the top of the Steamboat Ski Resort. A storm currently near Las Vegas is forecast to move through our area starting tonight and eventually restart the snow showers that will likely last into Wednesday morning, though it is currently unclear if they start late tonight or Monday night. Colder temperatures will accompany the storm which should wind down on Wednesday morning and be followed by a break later Wednesday lasting into Friday ahead of the next modest storm for the beginning of next weekend.
Steamboat Springs is digging out of the latest round of snows that started on Friday afternoon and left two day totals of 16” at mid-mountain and 22” up top as of the New Years Day ski report. Snowfall has temporarily stopped ahead of the next storm, which has formed into a difficult-to-forecast eddy currently near Las Vegas, and is forecast to move into northeastern Colorado on Monday night.
Earlier forecasts had significant snows over our area from later tonight through Monday, though the latest weather forecast model trends have weakened the storm and moved it further north. While the slower storm means only an inch or two at best on the Monday morning ski report at mid-mountain, conflicting guidance means a low confidence forecast for snowfall during the day, ranging from as little as 3” to as many as 14” for the Tuesday morning ski report.
While the precipitation forecast is uncertain, the colder temperatures are not, as cold air associated with the storm overspreads our area starting tonight. Look for high temperatures in town dropping to the low to mid-twenties, below our average of 27 F, and temperatures up top dropping toward 20 F on Monday and the low to mid-teens on Tuesday and Wednesday as reinforcing surges of cold air moves through on Monday night and Tuesday.
Snows should pick up with each of these reinforcements as favorable cool, moist and unstable northwest flow picks up behind the impulses. I’ve already pointed to the unpleasant uncertainty for snowfall during the day Monday, but there is more confidence in snow showers, moderate to heavy at times, occurring from Monday night through Tuesday night before they taper off around Wednesday morning, leaving 3-6” for the Wednesday morning report.
So we should see a break in the active weather starting Wednesday afternoon as a transient ridge of high pressure passes overhead on Thursday and brings a rare appearance of the sun. But the next modest storm keeps the ridge moving, with the possibility of more snow starting later Friday and lasting into Saturday. Be sure to check back to my next regularly scheduled weather narrative on Thursday afternoon when I’ll have more details on the storm to start next weekend.