Winter Weather Advisories out and also touch of Christmas Eve Snow?

December 20, 2024 8:14am

Let’s begin with the current conditions at 8am 12/20/24

Temps- Mainly 20s across the high ground, and 30-32° as you get to some of the lower areas.

Radar- pretty light stuff this morning, but enough to coat any untreated roads.

The better slug of precip looks to cross the southern Alleghenies later/overnight. The Weather Service out with Winter Weather Advisories, Randolph County and south in the Alleghenies and on down the higher Appalachians.

NWS Expected Multi Day tally.

Tonights batch looks to do best in the southern Alleghenies and then on Saturday, watch the for potential of a few high ratio lake bands north. Not a lot of moisture associated with them, just high ratio fluff.

A look at the GFS which I ran through Christmas Day. Watching that potential of a bit of snow Christmas Eve. Euro and Canadian models similar, but with their own variances.

-temps off the GFS

Modeled Snow Depth 7am Christmas (model does not consider many localized factors)

Not a strong part of the modeling parameters. They do try to hold a little snow cover for Wednesday at 7am, Christmas Day.
– the snow we have coming is of little mass. Meaning there is little holding power. It is falling on cold ground, during the lowest sun angle period of the year and dewpoints remain low Monday. That helps limit melt in aress that pick up a few inches.
– Tuesdays event, minimal event, but as of now a potential of 1″ possibly 2″ of wet snow. Occuring with temps low to mid 30s. So you’d expect a bit of melt of what falls and what is on the ground in areas that pick up some snow.
– the GFS breaks clouds up enough Tuesday night to allow temps to drop back im the teens and 20s Christmas morning. Euro keeps clouds socked in, temps steady upper 20s, low 30s.
– so given that, if we can get some of these snow aspects today-Saturday to work out, and again Tuesday, some areas definitely have the potential for some white on the ground Christmas morning.
– Temps on Christmas look to hold mainly 30s at this point.
– overall not cold next week beyond Christmas. Things actually look to dry out once we get past the Christmas eve precip. Temps remain maxes upper 30s to mid 40s, mins upper 20s to lower 30s. Not cold, but also not that terribly mild.