CHARLESTON, W.Va. -- Around 33,500 people in West Virginia are still without power, and additional winter storms that could hit the region Wednesday may further delay restoration efforts.

About 33,500 MonPower First Energy customers are still without power at around 10 p.m. Sunday, with 7,788 customers in Preston County -- around 46 percent of customers served in that area still in the dark.

According to MonPower, it could still be almost a week before most customers have power back. As of Sunday, estimates for restoration for Braxton and Grant counties, and parts of Barbour, Nicholas and Preston counties were Thursday, with Greenbrier, Mineral and parts of Randolph, Tucker and Webster counties seeing restoration as late as Friday evening.

Appalachian Power has restored power to 95 percent of its customers who were affected by Hurricane Sandy.

"Restoration is slight ahead of the company's initial projections in most areas, but some scattered outages will carry into Monday," according to a post on the Appalachian Power Facebook page.

As of 10 p.m. Sunday, there were around 1,000 AEP customers in West Virginia without power, many of them in Wyoming County, where damage was severe.

More than 1,300 company and contract line workers, 100 damage assessors and 450 tree trimmers are working in the areas where outages remain, according to AEP.

Boone, Cabell, Clay, Fayette, Kanawha, Lincoln, Logan, Nicholas, Putnam, Raleigh, Roane and Summers counties were expected to be restored Sunday evening.

Outages for Appalachian Power customers peaked Tuesday with 157,000 customers.

The National Weather Service has not yet issued a winter weather watch or warning for the mountains, but said people should be "aware of potentially impactful winter weather," which could hit the region Wednesday night and carry into Friday.

Meteorologist Joe Merchant of the NWS said the state's higher elevations could get 2-5 inches of snow with the Nor'easter, which is expected to strengthen off the coast of New York and New Jersey and track inland to central New England. The Charleston area will not be affected very much by the storm, Merchant said.

"The storm itself won't be anything close in size and strength to what we saw with Sandy," Merchant said.