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Mar 14, 2017 11:01 AM

Height of the storm hits Tuesday afternoon and evening with blizzard conditions

NH1 Meteorologist

Snow has moved into the Granite State, but the height of the storm comes Tuesday afternoon into early evening.

Blizzard warnings are in effect for southeast New Hampshire, where the combination of heavy snow and strong winds will create whiteout conditions during the height of the nor'easter Tuesday afternoon.

The rest of the state is in a winter storm warning, for widespread heavy snow accumulations.

HEIGHT OF THE STORM: 12 TO 7 PM TUESDAY

Heavy snow currently in the Mid-Atlantic and Connecticut moves northward, arriving in New Hampshire after 12 p.m.

As these bands of snow move in, expect snow to fall at the rate of at least 1 inch per hour. At times, especially during the middle part of the afternoon, snow may fall at the rate of 2 up to 4 inches in just one hour.

Driving will be dangerous and nearly impossible in these heavy bands of snow. Roads may become impassable, and those driving are putting others at risk by being on the roads.

During the mid to late afternoon, the wind will become more of a problem. Wind is a concern statewide, but especially in southeast New Hampshire. Northeasterly wind gusts between 50 and 60 mph are possible. Some higher gusts cannot be ruled out. Combined with heavy, wet snow, power outages are likely.

WEDNESDAY: SNOW SHOWERS, SQUALLS

The storm will be long gone by Wednesday. Expect clouds with some partial sunshine at times. High temperatures will be in the 20s north to near 30 in southern New Hampshire.

It's possible schools will delay or cancel classes as the clean-up begins.

However, snow showers will linger in the mountains for much of the day.

A few heavier snow squalls cannot be ruled out during the afternoon, even in central and southern New Hampshire. The time frame for these would be after 3 p.m.

Snow squalls are quick-moving snow showers that hit like a summertime thunderstorm, with a downpour of snow and gusty winds. Quickly lowering visibility, and dropping a coating to an inch of snow in a matter of minutes, they are notorious for causing problems for drivers.

"BLIZZARD" CONDITIONS MAY BE MET

A storm is officially considered a blizzard when the following criteria is met at a particular location: Frequent wind gusts to 35 mph and quarter-mile or lower visibility in snow (which can be blowing, drifting, falling, or all three), for at least three consecutive hours.

The odds are highest of this official criteria occurring in southeast New Hampshire.

SNOW TOTALS

Most of the state will receive a foot of snow. Many areas will see around 16 up to 20 inches, including Manchester, Concord, and Nashua.

The highest totals, closer to 2 feet, are expected in the Monadnock Region and in the eastern part of the Lakes Region.

A wetter, pastier snow will keep accumulations limited to 10 to 16 inches near the seacoast. Still, this amount of snow is falling in a very short period of time, causing major problems.

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