More snow on the way… maybe

The Boulder NWS is not talking much about this storm at the moment, but both the NAM and GFS models predict over 1″ of liquid precipitation for the Front Range Urban corridor during the next 60-84 hours. The NAM solution shows the potential for a big snowstorm here in Greeley on Sunday, while the GFS doesn’t look so promising. There’s a trough of low pressure developing over the Western US at the moment and the first wave and jet max will push a cold front through Northern Colorado with some snow bands forecast to develop Friday evening over the area generally from Boulder north to Fort Collins and east to the Greeley area. Looks like a general 2-4″ with this initial cold front / snow band Friday evening is possible with maybe up to 6″ in places. After a lull in the action on Saturday, another storm system will track from the Pacific NW, dive down through Utah, and then turn east and track over southern Colorado or northern (or central) New Mexico depending on the model solution you look at. The NAM is forecasting 1.5″ to 1.75″ of liquid between now and Sunday night over the northern urban corridor (including Greeley), with over an inch of that falling on Sunday. If most of this falls as snow, we could be in for a foot to foot and a half of snow with these 2 systems from Friday – Sunday. The GFS is slightly drier for the period, but is still showing 1″ to 1.25″ of liquid by Sunday night. The models have been flip flopping quite a bit over the last couple of days trying to resolve this system. So in reality we could get a big snow or a whole lot of nothing.