Blocking High-pressure moves in beginning Wednesday

Posted at 1:17 PM, Dec 01, 2020
and last updated 2020-12-01 15:17:42-05

BOZEMAN – Clouds and flurries continued today from a storm system that passed through the region Monday afternoon and evening.

Mountain passes, mostly east of the divide, continue to see areas of light snow so watch for ice during tonight’s commute around SW Montana.

A building High-pressure ridge is producing a Northerly flow aloft today and that is another reason for the cooler temperatures. This ridge pattern will slowly expand to the east and by Thursday the ridge should be right over Montana.

This blocking pattern will produce a quieter weather condition through early next week. There are some side effects with this ridge, and they are colder morning lows but warmer daytime highs. Air stagnation is also a side effect so look for worsening air quality, patchy morning fog, and with inversion prone valleys temperatures will chilly.