How much snow will Philly get on Friday?

Should the Philadelphia region expect more snow later in the week? And, more importantly, how much?

The weather service says it expects 2 to 4 more inches beginning Thursday night and continuing into Friday night.

But meteorologists advised that the coming event would have a lot of moving parts.

The consensus is that it won’t be mega-storm, but it could add additional inches atop what is likely to be a rock-hard snow-and-ice cover after two of the coldest nights of the winter.

» READ MORE: Philly’s snow drought is over, and there’s more wintry weather and snow on the way

Another coastal storm is due to form in the Southeast, but the precipitation is likely to be more associated with upper-air systems to the west, said Ray Martin, lead meteorologist with the National Weather Service in Mount Holly.

The Monday night-Tuesday snow took its good old time accumulating, falling at the rate of about an inch every five hours in Philly. This storm was the first time the region measured more than an inch of snow in 716 days.

Dave Dombek, senior meteorologist with AccuWeather Inc., says this next snowfall could accumulate even more ponderously, perhaps over a 36-hour period.

Stay tuned. A major warmup is expected to get underway next week.