Storm system threatens Northeast with heavy snow, rain

A massive storm system that brought nearly a foot of snow to some parts of the Midwest is now threatening millions of residents in the Northeast with heavy snow, torrential

rain and high winds. The winter storm brought 11 inches of snow across Kansas on Saturday, which shut down some roadways in the region, including Interstate 70.MORE:

Winter storm bringing snow, ice and tornadoes, expected to wallop US this week The snow was so heavy at some points that northwest Kansas saw up to 2 inches per hour.

More than 13 million Americans across 18 states from Arizona to Maine are currently under winter storm alerts. On Sunday, two low systems will merge, which are expected to

exacerbate heavy rainfall from the Northeast to the South along the East Coast. Interior parts of the Northeast will begin to experience snow from mid-to-late afternoon

and will continue through the morning. The weather could affect Sunday afternoon's NFL playoff game between Cincinnati Bengals and the Buffalo Bills at Highmark Stadium

in Orchard Park, New York.MORE: Deadly winter storm continues to unleash mayhem: Latest updates What starts as rain from parts of northern New Jersey to coastal Maine will

change over to snow on Monday morning and into the afternoon. Boston is expected to see 3 to 6 inches, while the areas from Scranton, Pennsylvania, to Bangor, Maine, will

likely see between 6 and 12 inches, and even more in some spots, forecasts show. Snow accumulation in parts of northern New Jersey will measure in at 1 to 3 inches.