Nightly News   |  January 21, 2014

Brrr! Frigid Temperatures Descend on Northeast

NBC News’ Al Roker has the latest forecast as the storm continues to deepen, creating blizzard-like conditions. As the arctic air tunnels in, the snow will eventually end, but it will still be blowing and drifting.

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This content comes from Closed Captioning that was broadcast along with this program.

>> on the plaza at 30 rock in midtown manhattan to check in with al roker on where this storm is headed, perhaps, tonight into the morning hours. good evening.

>> reporter: you know, they work nonstop 24/7 to keep this clear, the streets are snow covered because the snow is coming down more than an inch an hour. so far, central park receiving five inches of snow. northeast philadelphia 10.5 inches. reagan international 2.1 breaking a snow drought set back in 2006 . here's the latest. it's going to continue to deepen right rates of 1 to 2 inches an hour. overnight tonight it becomes a weather bomb , almost if you will, so that there are blizzard conditions, gusts of 50 miles per hour. bitterly cold arctic air. and as it continues to make its way up the coast by tomorrow morning , gusty winds, the snow ends but it's going to be blowing and drifting. single digit temperatures. snowfall amounts this is on top of what's already fallen. some areas along the cape may pick up a foot and a half. generally 9 to 12 inches of snow , to add insult to injury , we have the -- this is basically, we talked about it last week, the polar vortex , this is not the main polar vortex , a piece of it has broken off, that's bringing in the cold air, look at what we're going to be looking at tomorrow morning , minneapolis, you're going to see overnight low of 4 below, it will feel like 20 below , cincinnati will feel like 13 below. 16 below in washington, it will feel like seven below in boston, brian, and that's not the coldest of it. by this time on thursday, it will be even colder, about 10 to 20 degrees colder. we're not out of the woods on this thing just yet.

>> al come on inside from