Some snow accumulations by Monday before a major winter-like storm affects our area on Tuesday
Sunday, December 1, 2013
Light snow will continue today and become slightly heavier tonight as a subtle wave grazes us in moist northwest flow. I might expect 3-6” on the hill by Monday afternoon based upon this morning’s model runs.
Skies should clear by Monday afternoon before a storm currently situated around the Gulf of Alaska will affect our area perhaps as early as Monday night with light showers. The cold front that will bring the very cold winter-like temperatures southward is now projected to move across the area a bit faster than earlier forecasted, perhaps as early as Tuesday morning. Good snows Tuesday should produce 6-12” on the hill by Wednesday morning. Our snow on Wednesday will be dependent upon how far south the frontal boundary moves, and I might expect an additional 4-8” during the day that will appear on the Thursday morning report.
There may be a break in snowfall Thursday morning before a Pacific wave rounds a building ridge in the Gulf of Alaska kicks the main part of the storm over us around Friday. More snow and likely the coldest temperatures of this arctic outbreak are expected then. Snow and cold will continue through the weekend as additional waves of energy form the north move over the area in the very cold and unstable air mass.
It appears that early in the next work week the ridge in the Gulf of Alaska that has shunted this very cold over our area will break down and allow a moderation of temperatures along the mountain slopes. However, inversions will develop and persist at lower elevations keeping mountain valleys in the deep freeze.