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Posted: January 03, 2018

What is a Nor’easter and how does it form?

What Is A Nor'easter?

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What is a Nor’easter and how does it form?
Workers continue snow removal efforts in the Back Bay neighborhood the day after a winter storm, on January 28, 2015 in Boston, Massachusetts. The storm brought 24.4 inches of snow to Boston, and up to 36 inches in other parts of Massachusetts. (Photo by Kayana Szymczak/Getty Images)

By Kirstie Zontini, WHIO.com

A powerful storm has issued winter weather advisories and storm warnings up the entire East Coast

“You might be seeing some pictures and videos of snow coming from Florida or Georgia,” Storm Center 7 Meteorologist Kirstie Zontini said.” Winter Storm Warnings blanket the East Coast all the way to the northeast where Blizzard Warnings have been issued for Maine and Massachusetts.” 

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This powerful type of winter storm is known as a Nor'easter, Zontini said. 

“A Nor'easter gets its name because the winds in the coastal part of the storm are typically moving from the northeast. These types of storms usually develop between September and April and can develop between Georgia and New Jersey,” Zontini said.

“The area of low pressure hugs the coast staying around 100 miles east or west of the east coastline. A Nor'easter will typically move northeast, continuing to strengthen, peaking near New England or eastern Canada,” according to Zontini.

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“Storms like this can go through what is called ‘bombogensis’ which is when a low pressure system rapidly intensifies, dropping 24 millibars or more in 24 hours.” 

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A Nor'easter usually produces heavy rain or snow and are also know for very strong wind gusts and dangerous surf. The big cities that can fall in the path of a Nor'easter include Washington D.C., Philadelphia, New York, and Boston, Zontini said. 

“During the winter, these storms develop off the east coast because it is when the polar jet can dip south bringing very cold air to southern states,” Zontini said. 

“The warm Gulf stream waters hug the east coast and warm the air over the coastline. The cold land air spills then can move towards the relatively warmer air over the ocean and feed or enhance the development of theses low pressure systems.”

Some past Nor'Easters include the New England Blizzard of February 1978 and the March "Superstorm" of 1993.


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The #1 Free Home Show in the Miami Valley is almost here

The event formerly known as Home World has a new name and new location. Get totally inspired for spring as you find hundreds of ways to improve your home. Make your home the one you really want. Show open daily during mall hours.  Admission is free! 

  • Landscaping and Outdoors

Get ready for Spring and Summer and transform your outdoor space into something that feels like you’re on vacation

  • Demonstration Stage

Make sure to visit our demonstration stage during the entire show. There will be exciting demonstrations on how to re-purpose and design thanks to Monarch Market Affair

  • Meet Barry Williams from The Brady Bunch 
  • Join us as we welcome Me-TV superstar Barry Williams who played the iconic Greg Brady from The Brady Bunch TV Show. Meet him and get an autograph on February 10th stage side at center court in front of Macy’s. 
  • The line will start forming when the Mall Opens, and Barry’s First appearance will be at 11 a.m.
  • Come prepared with your camera or cell phone for the Meet and Greet. 
  • There will be a Q&A session with Barry at 1 p.m. 
  • Enter to win a Me-TV Prize Pack and be the first to meet Barry Williams

For more information on this year’s big event and how your business can participate visit HomeExpoDayton.com