Get your umbrellas ready because the rain will be on full force for this Christmas Eve. Rain should enter the region during the morning hours on Wednesday and continue for much of the day. Majority of the Northeast will be too warm to support any wintry precipitation. Majority of the 12z model suite came in warm, meaning many spots even into New England will find snow hard to find. However, the weather could change and I will be watching subsequent model runs for any changes in the outlook.
It appears that there will be a frontal boundary, currently positioned in the middle of the country will begin to move eastward. An area of low pressure will develop along this front. This low pressure system will enhance the precipitation and allow for some heavy rainfall to develop ahead and along this front. Behind this frontal system there should be some good amounts of snowfall. It should be noted that there is some cold low level air that is being held across the region. During the timeframe of the storm, surface temperatures do rise as well as the upper-level temperature profile, however they do remain below 0 in the upper-levels and below 32 at the surface for majority of Wednesday. Depending on the low track and how much warm air gets in will play a huge role in precipitation type across New England. The further west you are the greater the chance of seeing wintry precipitation. I will be keeping a close eye on the models to see if there is a shift in track in either direction.
The storm should wrap itself up on Christmas day but northwest winds will keep a chance of snow showers across New England and turning colder elsewhere across the Northeast.
Stay tuned,
Forecaster: Joe Gullo