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UPDATE (TUESDAY MORNING): Snow starts Tuesday with up to 6 inches possible. Latest on timing, sub-zero wind chills.

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A winter storm expected to hit New Jersey starting Tuesday afternoon could drop 3 to 6 inches of snow for areas north of I-78 with the rest of the state getting 1 to 3 inches before dangerously cold temperatures and wind chills arrive for the rest of the week.

The latest forecast update from the National Weather Service on Monday shows more widespread snow totals of at least an inch. Only the southern Jersey Shore will likely avoid accumulations and the timing of the storm could cause travel disruptions during the Wednesday morning commute, particularly in North Jersey.

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The precipitation will start off a mix of rain and snow on Tuesday afternoon before changing to all snow along the Interstate 95 corridor in the early evening, the National Weather Service says.

Higher snow fall amounts will occur in northwestern areas such as Sussex, Warren, Morris, western Passaic and northern Hunterdon counties. While Morristown should end up with about 3 to 4 inches, anyone a few miles further north or west could end up with 4 to 6 inches of snow by the time the storm winds down Wednesday morning.

Forecasters are calling for about an inch to 2 inches for areas along the New Jersey Turnpike between Newark and Camden. Shore areas from roughly Long Beach Island and south will get less than an inch as rain which mixes with snow will hold down precipitation amounts.

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After hammering the Plains and Upper Midwest with #snow and wind, #WinterStormJayden turns its attention on the South and East. https://t.co/gylAALRmpo pic.twitter.com/5GwsYSuhiz — The Weather Channel (@weatherchannel) January 28, 2019

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AccuWeather.com's snowfall maps tell a somewhat different story for the pending storm. Accuweather's forecast also calls for the northwest part of New Jersey to get 3 to 6 inches of snow and 1 to 3 inches along the I-95 corridor. But AccuWeather's forecast for the southern half of the state has more of a mix of rain and snow south of I-195 and along the Jersey Shore with little to no accumulation.

If the forecasts hold, many parts of New Jersey will get more snow from this minor system than in the past two months combined.

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While the precipitation will mostly be gone by Wednesday afternoon, the temperatures are expected to get much colder. Strong gusty winds will accompany a sharp drop in temperatures with the mercury plunging into the single digits Wednesday night into Thursday. Highs on Thursday will only be in the teens.

Bitter cold conditions continue Thursday night into Friday, the first day of February, when temps make it back to the 20s. New Jersey will be back into the low 30s by Saturday and the low 40s on Sunday. The sun will be out for four straight days beginning Thursday.

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Wind chill forecast for the week

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Monday will be a calm, dry day with partly sunny skies and temperatures only reaching the low 30s - about 10 to 15 degrees cooler than Sunday.

Clouds will increase Monday night as temps dip into the 20s.

Forecasters will continue to track the path of the winter storm throughout the day on Monday.

Here's a roundup of snowfall predictions from meteorologists in New Jersey.

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Listen to NJ.com on Alexa, or via a daily podcast

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NY NJ PA Weather forecast

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QUIET, CHILLY WEATHER MONDAY...



Tomorrow could get a bit messy, with rain changing over to snow. That snow may accumulate, especially in NW NJ.



And then the door to the arctic opens again Wednesday, as a fierce wind causes temperatures to fall sharply.https://t.co/DD4O4U0IJE — Meteorologist Dan Zarrow (@DanZarrow) January 28, 2019

NJ 101.5 meteorologist Dan Zarrow's snowfall prediction

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Here are the expected snowfall totals for Tuesday night (as of now). https://t.co/AiiPEPfB0k pic.twitter.com/1SWRm3eQPx — Action News on 6abc (@6abc) January 28, 2019

Snowfall prediction from 6ABC.com in Philadelphia

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7-day forecast

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More New York area weather

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More Philadelphia area weather

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Current New Jersey radar

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MORE NEW JERSEY WEATHER COVERAGE

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Jeff Goldman may be reached at jeff_goldman@njadvancemedia.com. Follow him on Twitter @JeffSGoldman. Find NJ.com on Facebook.

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