It was supposed to be a "nuisance" snow, but now it is taking on a disruptive look for folks with travel, shopping or other plans tomorrow.
The National Weather Service's forecast accumulation map now shows close to 4 inches in Philadelphia, with more in South Jersey. It looks to start around 9 a.m., and continue into the evening, and it will be cold enough to stick.
That is quite an upgrade from the morning forecast, but it's by no means a done deal. "It's a tricky system," says Corey Mottice at Accu-Weather Inc.
An area of low pressure in the upper atmosphere will have pieces of energy rotating around it, he said. The weather service also is looking for a coastal low to form, and today's later model runs all show more moisture streaming into the region.