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

Published: Wednesday, January 03, 2018 @ 1:45 PM
Updated: Friday, March 02, 2018 @ 5:09 AM

Meteorologist Kirstie Zontini talks about what these strong East coast storms are and the impacts they can bring.

A powerful storm up the East Coast has caused flight cancellations this morning.

This powerful type of winter storm is known as a Nor'easter, said Storm Center 7 Kirstie Zontini said. 

LOCAL WEATHER: Frigid temperatures remain this week 

“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.

>>Track the latest conditions with WHIO Doppler 7 Radar

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

RELATED: Tips, warning signs for frostbite, hypothermia

“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.” 

FOOTAGE: Nor’easter pummels the East Coast (courtesy of CBS)

RELATED: Lose power in the cold? Here’s what to do 

A Nor'easter usually produces heavy rain or snow and is also known 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 then can move toward 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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Winter Storm Watch for southwestern Miami Valley beginning late Friday 

Published: Thursday, March 22, 2018 @ 3:32 AM
Updated: Thursday, March 22, 2018 @ 8:55 PM

Sunshine is expected today in the Dayton area, with snow returning Saturday.

Mainly clear skies are in the forecast this evening with temperatures slowly falling through the 30s, Storm Center 7 Chief Meteorologist Eric Elwell said.


  • Clear and quiet Friday
  • Winter storm to brush Miami Valley starting this weekend 
  • Warmer pattern setting up next week 

>> Winter Storm: ‘Either Dayton or Cincinnati could get nailed’

>> Live Doppler 7 HD Interactive Radar


>> Whio Weather App

Friday: Skies will be mostly sunny with temperatures rebounding into the middle 40s.

Saturday: Skies will be cloudy with snow likely, especially south. The snow may be heavy with accumulation likely depending on the storm track. Highs will hold in the upper 30s.


RELATED: Frostbite, hypothermia warning signs

Sunday: Skies will clear with temperatures climbing back into the lower 40s.

>> County-by-County Weather

Monday: Clouds will be on the increase. Temperatures will rebound to near 50 degrees.

Tuesday:  Milder temperatures arrive but so will the threat for showers. Highs will top out in the middle 50s.

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WPAFB Friday Weather: Sunshine for the day; Winter Storm to arrive early Saturday

Published: Friday, March 23, 2018 @ 1:12 AM

WRIGHT PATTERSON AIR FORCE BASE—Sunshine will take us into the day with temperatures rebounding into the middle 40s this afternoon, according to Storm Center 7 Chief Meteorologist Eric Elwell.

RELATED: 5-Day Forecast

Clouds will increase tonight ahead of a winter storm which is taking aim on the Ohio River Valley. The storm will spread snow into the area around or just before sunrise Saturday as temperatures drop into the upper 20s. Snow may accumulate 1 to 3 inches in the area with higher amounts expected the farther south you go.

RELATED: County-by-County Weather

Highs on Saturday will hold in the upper 30s with the clouds and snow. Temperatures may climb enough for the snow to briefly mix with rain before ending. Skies will clear Sunday with a warming trend getting underway into next week.

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Slick spots possible as temperatures drop overnight

Published: Wednesday, March 21, 2018 @ 3:59 AM
Updated: Wednesday, March 21, 2018 @ 11:35 PM

Meteorologist Kirstie Zontini looks into what other problems you may deal with Wednesday and Thursday on the roads.

Skies will clear with temperatures dropping into the lower 20s overnight, Storm Center 7 Chief Meteorologist Eric Elwell said. Some refreeze of slushy areas likely, which could lead to some slick spots.

>> Clipper-type system could bring snow this weekend


  • Skies slowing clearly, cold overnight
  • Sunshine to return rest of week
  • Weekend storm could bring accumulating snow
Five Day Forecast


>>How much snow did your area receive?

Thursday: Sunny skies will return with unseasonable temperatures holding in the lower 40s.

Friday: Sunshine will start the day but clouds will increase late. Highs will rebound into the middle 40s.

>> Remember these things when driving in the snow

Saturday: Snow will push across the Miami Valley. The snow may mix with rain in the afternoon, especially south. Some snow accumulation will be possible. It will become blustery with highs holding in the upper 30s.

>> WHIO Weather App

Sunday: Skies will clear with highs in the lower 40s.

Monday: Sunshine is expected to start the day with increasing clouds late. It will be milder with highs in the upper 40s.

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WPAFB Thursday Weather: Sunshine returns, cool temperatures continue

Published: Thursday, March 22, 2018 @ 12:23 AM

WRIGHT PATTERSON AIR FORCE BASE—Sunny skies will return to the area with unseasonably cool temperatures holding in the lower 40s, according to Storm Center 7 Chief Meteorologist Eric Elwell.

RELATED: 5-Day Forecast

After another cold night, sunshine will start the day Friday, but clouds will increase late. Highs will rebound into the middle 40s.

RELATED: County-by-County Weather

There is a chance for more snow as we start the weekend. Some accumulating snow will be possible Saturday. The snow may mix with rain, mainly south. Highs on Saturday will hold in the upper 30s. 

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