An
occluding storm will be approaching from the west while a secondary coastal
storm develops. This will lead to some warm advection snow initially late
tonight. Clouds will limit radiational cooling tonight, and the low will likely
occur as the snow starts, inducing evaporative cooling, before the atmosphere
saturates and warm advection wins out. Light to moderate snow continuing
afterwards through early Tuesday night enhanced by deep-layer southeasterly
winds advecting moisture off the Atlantic Ocean and upsloping along the
foothills of the Appalachians. While the southeasterly winds will also advect
warmer air from the Atlantic Ocean, it will be counteracted by upslope and a
little cold air damming, and it is usually at or a little cooler than models in
this type of setup. It will also be completely cloudy, limiting daytime
heating. The
cold air damming will also limit the mixing of the stronger
southeasterly winds from aloft down to the surface, perhaps leading to
weaker than modeled winds. Still, the milder temperatures will likely lead to less undercatch of
snow than last week.
No comments:
Post a Comment