Thursday, September 13, 2018
The current warm temperatures running 5 to 10 degrees above the 73 F average for Steamboat Springs will continue during the next week. Our area is sandwiched between a a large area of low pressure off the West Coast and a sprawling ridge of high pressure over the southeast, which incidentally will keep hurricane Florence sheltered from the jet stream and lead to very slow storm movement and likely catastrophic flooding over and near the Carolinas through the weekend.
The large West Coast area of low pressure will lift to the northeast in pieces through the weekend, and this will help reduce the highest winds over our area for several days as the jet stream lifts northward, though some breezy afternoon winds will persist. As the upper level flow shifts to the south, some sparse moisture is forecast to move northward across Colorado late Sunday, and we may see a small chance of showers on Monday that will likely produce more wind than rain.
More incoming Pacific energy reloads the area of low pressure off the West Coast, and some energy rounding the base of the system looks to cross the Great Basin and drag a weak cool front across northern Colorado later Wednesday. Unfortunately, the front is forecast to be dry and windy.
Winds should slacken for the end of the work week with continued warm temperatures before another dry and likely windy cool front is forecast to move through northern Colorado early the following weekend.
Sunday, September 9, 2018
Behind a weak cool front that passed through Steamboat Springs last night, gorgeous late-summer weather returns this Sunday. This weather will persist into next weekend, though winds will be picking up as the work week progresses.
Currently, a large and cold storm is spinning off the British Columbia coast. This storm will be periodically reinforced with cold air dropping southward from the North Pole, forcing the storm southward and eventually elongating it to the northeast as energy is periodically ejected well north of our area.
The end result is the western third of the U.S. will be caught between the strong storm developing off the West Coast and a building ridge of high pressure over the southeast. Winds will pick up from the southwest as early as Tuesday afternoon, keeping sunny skies and warm temperatures above our 74 F average around that will last through the work week and into next weekend. The clear skies will also allow for efficient nighttime cooling that will drop our overnight lows to around our average 37 F, with the possibility of frost in the low-lying areas of the Yampa Valley.
As mentioned in the previous forecast, hurricane Florence looks to affect at least the mid-Atlantic coast heading into next weekend. This storm may have prolonged effects as it is currently forecast to become trapped under the ridge of high pressure developing over the southeast. It may loiter over the landfall area for three or four days, centered around next weekend, before cold air moving southward from Canada dislodges the hurricane and brings the first freezing temperatures to parts of the northeast.
Thursday, September 6, 2018
The broad storm system that was over the southwestern quarter of the U.S. will grudgingly move east of the Steamboat Springs area this Thursday, with warming and drying expected for the following week, except for a weak cool front that will bring a chance of showers later Saturday into Sunday.
First, however, the tail end of the storm system contains a weak circulation that will move over our area today, giving us another chance of showers this afternoon and evening, similar to yesterday.
Drier air filters into the area behind the departing storm for Friday and Saturday with daytime temperatures warming above our 75 F average. Ahead of a weak cool front timed for overnight Saturday or early Sunday, we should see increased chances for showers late in the day Saturday and overnight.
Any showers should end by midday Sunday as much drier air invades from the west ahead of a strong and developing storm off the Pacific Northwest coast. Pieces of the storm eject well to our northwest even while additional cold air moving through the Gulf of Alaska keeps the storm spinning near the coast, and the end result for our area is mostly dry air and continued warm temperatures in southwest flow.
We may see slight shower chances later Monday as a cool front races well north of our area, but sunny skies should predominate for the rest of the work week as pieces of the northwest storm sink southward along the West Coast. This will force the jet stream southward and closer to our area, bringing warm and windy southwest flow during the work week, especially around midweek.
While the weather will be rather quiet for us, look to the east for excitement as current Category 3 hurricane Florence approaches the East Coast. The path of the hurricane as it nears the coast is still very much in question, though at this point the entire mid-Atlantic and northeastern seaboard is threatened after mid-week and heading into next weekend.
Sunday, September 2, 2018
A broad, diffuse and modestly moist area of low pressure over the southwestern U.S. will keep mostly sunny mornings and a small chance of an afternoon or evening storm around through midweek for the Steamboat Springs area. Drier air then invades the area after midweek behind a storm from western Canada that mostly stays well to our north as it travels along the northern U.S. border.
As has been the case this weekend, the best energy and moisture stays to our south through the coming midweek period. The afternoon and evening storms that do form may produce brief moderate rain for those lucky areas beneath the strongest cells, but they will likely be more windy than wet for the bulk of our region.
A storm from western Canada will travel along the border early in the work week and drag a weak cool front through northern Colorado on Tuesday, similar to the European ECMWF weather model solution offered in last week’s forecast. This will help move the southwestern weather system eastward across Colorado over a couple of days, with Wednesday having the relatively highest likelihood of showers as the tail end of the system moves over our area.
Drier air begins filtering into the area on Thursday, with much drier air advertised for Friday and Saturday. The sunnier afternoon skies and warmer airmass will force daytime temperatures above our 76 F average, but the clear overnight skies will keep lows near our 39 F average for some gorgeous late summer weather.
A fast moving Pacific storm is forecast to cross the northwest coast later Friday and again travel north of our area, though a weak cool front with the possibility of some showers is currently advertised around mid-weekend.