Rounds of snow and flurries are forecast for central and western Pennsylvania through next week.
The snowy episodes are being caused by storms originating from Western Canada and are known as Alberta Clippers.
Most storms will struggle to bring a flurry. However, a small number of the storms can bring accumulating snow.
On such storm will swing through later Friday night into Saturday morning with a quick 1 to 3 inches of snow. Locally higher amounts are possible in the mountains.
Because some of the snow can be briefly heavy and will fall during the evening and early morning hours, when temperatures are at their lowest point, there can be slippery travel. The snow will tend to melt off during the midday and afternoon hours.
Another weak storm can bring a couple of snow showers Sunday into Monday.
The pattern will also favor bouts of brisk winds.
After moderate cold through Monday, more substantial cold follows later next week.
Later in the month, frigid air that pushes southward over the Midwest will turn eastward and could alter the weak storm pattern to one that favors more potent storms and heavier snow.
A storm will bring snow and ice that will lead to slippery travel along a 1,500-mile swath from northern Arkansas and Georgia to Maine early next week.
Spring of 2016 could rank in the top 10 warmest on record for Canada.
The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during Valentine's Day weekend.
A blast of arctic air will be accompanied by flurries and even a localized wall of snow in some communities in the Northeast and parts of the Midwest at the start of the Valentine's Day weekend.
Conditions will be favorable for lake-effect snow through the end of the week, threatening low visibility and dangerous travel conditions.
The next windstorm to target Europe will narrowly miss the United Kingdom on Saturday before a cold snap settles in for Valentine’s Day and Monday.
Des Moines, IL (1990)
70 degrees, earliest ever at 70 of higher.
Southern Calif. (1992)
A 2 day rainstorm brought flooding and mudslides to the area. 12.53" of rain fall at Woodland Hills.
Cherry Hill, NJ (1999)
An F1 tornado causes significant damage to 10-15 homes.