Storm scooting south

Model forecasts are pretty locked now on low pressure passing south of the region, with high pressure keeping precipitation confined to southern New England. Southern New Hampshire will near the edge, with light QPF expected through Friday afternoon. Current radar imagery shows a large region of moderate precipitation, and in the form of snow across northern Pennsylvania into interior southern New England. Minor accumulations on the order of 1 to 3 inches can be expected in the higher elevations of northern CT and southern Massachusetts. Further north, QPF drops off quickly, although snow should reach Keene late tonight and fall through the morning hours Friday. Little if any accumulation is expected.

Of notable interest are the developments in northern PA where an inverted trough is supporting the moderate snow there. Ratios are an incredible 3:1 (very heavy stuff!) and they can expect accumulations ranging from 4 inches to 10 inches in the higher terrain. Widespread downed trees and power lines can be expected.

Looking ahead a few days, the longwave trough that has been causing all this cold weather and snow potential will be sharpening and closing off near the mid Atlantic region. Cyclogenesis off the Carolina coast can be expected on Saturday, and low pressure will move northward Saturday night, however there is a lot of uncertainty again on the northward extent of precipitation. Another chance of snow exists though.

This trough will be lifting out of the picture by next week with moderating temperatures and drier conditions moving in.