Powerful winter storm pounds Northeast US

Weymouth Expected to Get 8-12 Inches of Snow Thursday

The biggest storm to hit the Northeast this winter dropped more than a foot of snow in Greater Boston on Thursday, turning roads treacherous, grounding flights and giving millions of people weather whiplash a day after temperatures soared into the 50s and 60s. It was 60 degrees at 6 a.m., but it's gradually getting cooler. Any overnight showers are gone, and you may even see some sun. "The most widespread significant snowfall the Albany to Hudson Valley, lower Hudson Valley corridor has had in the last two seasons combined". Warm air high in the atmosphere will clash with colder air near the surface.

Many communities announced parking restrictions in advance of the storm, and some school systems canceled classes on Thursday. Friday will remain chilly with a high of 32 and lows in the 20s.

Commuters faced windblown snow and slick highways, numerous accidents were reported and more than 3,000 flights were canceled.

In Menands, the snow emergency begins at noon Sunday, meaning parking will not be allowed on village streets, and ends at 3 p.m. Monday.

Snow was falling during morning rush in the city. "I don't care if you have a four-wheel-drive auto and you think you're a super hero. if you don't have to be out, don't be out". The current NH1 forecast calls for 10 to 16 inches west and north of Concord.

High tides are around 12 a.m. and 12 p.m. Monday.

March 1888: A four-day blizzard brought 21 inches of snow, and the aftermath of it was disastrous - it killed more than 200 people. "We went into this winter in some cases with 10- to 16-inch rainfall deficit".

In Philadelphia, as of 11:45 a.m., 2.8 inches of snow had fallen. The wet, heavy snow could also stick to trees, branches and power lines, which could cause widespread power outages.

If you're south of Philadelphia -- in an advisory rather than warning area - expect heavy rain at first.

- Any rain early Monday morning will likely change back to snow, however there is some uncertainty on the exact timing of the changeover.

Boston Mayor Marty Walsh declared a snow emergency and announced that school would be closed until Monday.

Saturday: Mostly cloudy. Highs 33-38.