Tuesday snowstorm to deliver wind, snow, frigid temperatures

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Heavy blowing and drifting snow will overtake South Jersey during the afternoon and evening hours, messing up the evening commute, the National Weather Service Mount Holly Forecast Center in issuing updated storm totals./NWS Heavy blowing and drifting snow will overtake South Jersey during the afternoon and evening hours, messing up the evening commute, the National Weather Service Mount Holly Forecast Center in issuing updated storm totals./NWS Heavy blowing and drifting snow is predicted to overtake South Jersey during the afternoon and evening hours Tuesday, messing up the evening commute, the National Weather Service Mount Holly Forecast Center said in issuing updated storm totals that could increase overnight.

South Jersey snow: 4-6 inches, but …

The National Weather Service Mount Holly Forecast Center issued a general 4- to 6-inch snowfall forecast for Tuesday, Jan. 21 in South Jersey, according to a Monday afternoon advisory posted by meteorologist Mitchell Gaines.

But there is a big but.

“There is still some uncertainty with regards to how much snow may fall,” Gaines said. “Right now there is a 10 to 40 percent chance of an 8-inch snowfall across the region.”

Official forecasts may change as the storm moves across the region and bombs out off the coast.

The NAM snowfall forecast model keeps most of South Jersey to less than six inches but other models are beginning to disagree./Weatherbell Analytics, www.weatherbell.com The NAM snowfall forecast model keeps most of South Jersey to less than six inches but other models are beginning to disagree./Weatherbell Analytics, www.weatherbell.com Currently, the North American Mesoscale and Canadian models agree with the NWS forecast of about 4-6 inches.

However, AccuWeather is calling for 6-10 inches, and the Weather Channel forecast about 2-5 inches as of 2:30 p.m. Monday, Jan. 20.

“We will be north of the track of this system and are likely to see a band of snow Tuesday and Tuesday night as it passes through the region,” Gaines said. “The system will pull in Atlantic moisture on the backside of the low as it intensifies into a coastal low. With temperatures below freezing, snow will create slick spots on roads.”

South Jersey snow timing

The heaviest snow is expected to fall between noon and midnight Tuesday, Gaines said.

Temperatures will plummet once the system passes.

Below-zero wind chill readings are expected Wednesday morning./NWS Below-zero wind chill readings are expected Wednesday morning./NWS “Highs Wednesday will likely be below 20 degrees,” he said. “Below-zero wind chills are likely late Tuesday night and Wednesday morning.”

Coastal flooding is not anticipated with this system, Gaines said.

Temperatures could moderate on Thursday before falling again on Friday, Gaines said.


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