The NWS advises caution over the Christmas period, with icy roads, blizzards and freezing rain making conditions hazardous.

An updated winter storm watch was released by the National Weather Service on Wednesday at 2:15 p.m. valid from Friday 7 a.m. until Saturday 7 a.m. for Elk, Clearfield, Cambria, Blair, Somerset and Bedford counties.

The National Weather Service issued a winter storm watch at 1:07 p.m. on Wednesday valid from Friday 4 p.m. until Saturday 1 p.m. for Passaic, Hudson, Bergen, Essex and Union counties.

Temperatures will remain near freezing during the storm, with low temperatures dropping into the 20s Friday night.

The National Weather Service issued a winter weather advisory at 1:15 p.m. on Wednesday valid from Friday 4 a.m. until Saturday 4 p.m. for North Oregon Cascades, Cascades of Marion and Linn counties and Cascades of Lane County.

A powerful winter storm is lashing Southern California, prompting California Governor Gavin Newsom to proclaim a state of emergency in Los Angeles and neighbouring counties. Coastal communities are bracing for multiple months’ worth of rain in just a few days, while areas charred by wildfires face the risk of mudslides.

At 3:15 p.m. on Wednesday, the National Weather Service released a winter storm warning in effect until Friday Dec. 26, at 10 a.m. for the Greater Lake Tahoe Area.

At 10:34 a.m. on Tuesday, the National Weather Service issued an updated winter storm warning in effect until 4 p.m. for Northern Wayne and Susquehanna County.