• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Weatherboy

Weatherboy Weather News, Maps, RADAR, Satellite, and Forecasts.

  • Local
  • Earth Science News
  • RADAR
  • Current Warnings
  • Satellite
  • Current Maps
  • Forecast Maps
  • Video

Snow Squall with Frontal Passage

by Weatherboy Team Meteorologist - January 30, 2019

A high-resolution, short-duration computer forecast model illustrates where the squall line will be this afternoon. Image: tropicaltidbits.com
A high-resolution, short-duration computer forecast model illustrates where the squall line will be this afternoon. Image: tropicaltidbits.com




A reinforcing cold front bringing a fresh blast of polar air to portions of the Mid Atlantic and New England will trigger a brief snow squall this afternoon.  The latest weather RADAR indicated snow squalls and snow showers moving into southeastern Pennsylvania from the west. This area of snow will consolidate into a squall line with brief but heavy snow and strong winds. Snow squalls will be accompanied by wind gusts in excess of 40mph  and the visibility will drop briefly to a half mile or less.  It’s also possible that a quick inch of snow may accumulate. The reduced visibility and the snow will create hazardous travel conditions. The National Weather Service warns, “Use extra caution if you must travel into or through these snow squalls and snow showers. Rapid changes in visibility and potentially slick roads are likely to lead to accidents. Consider delaying your travel until the snow passes your location.”

The secondary surface low system which spawned over the Mid Atlantic yesterday will continue to progress north into Maine and the Canadian Maritimes this afternoon. Behind this system and ahead of the Arctic high pressure located over the Great Lakes, pressures will fall as an Artic front pushes east.  While winds will gust to 40mph in areas of the snowsquall, gusts to or over 50mph can’t be ruled out either. The squall line should exit the Jersey Shore by 4pm but will continue to march across Long Island and eastern New England into the evening hours.



Latest weather RADAR shows snow showers and squalls in eastern Pennsylvania and New York at 1:50pm ET. Image: weatherboy.com
Latest weather RADAR shows snow showers and squalls in eastern Pennsylvania and New York at 1:50pm ET. Image: weatherboy.com

As this Arctic front moves through, temperatures will get progressively colder this afternoon and evening.  Not only will it be cold,  but strong pressure rises combined with strong winds aloft and modest atmospheric mixing will make for gusty winds through the afternoon and into the evening.

While the snow squalls will create short-term travel headaches, the big story will remain the bitter cold air.  Even at coastal locations of the Mid Atlantic, low temperatures tomorrow morning will be in the single digits, with readings below zero inland north and west of the I-95 corridor. Combined with the influence of the wind, it’ll feel like -10 to -15 across most areas, with wind chill factors of -20 to -30 possible in higher elevations of the northeast.  Because of this, the National Weather Service has issued a Wind Chill Advisory for tonight into Thursday for points north of the DelMarVa Peninsula.

The squall line can be tracked in real-time on Weatherboy Weather RADAR here.

Primary Sidebar

Sponsored Ad

Search

Latest News

  • Fiona and Ian Retired from Storm Name List; Farrah and Idris to be Added
  • Severe Weather Threat Returns to Mississippi Valley on Friday
  • Deadline for SBA Aid for Kauai Drought Coming Soon
  • Another Atmospheric River Event Slams into West Coast; More Epic Rain, Snow Expected
  • Anniversary of 1964 Great Alaskan “Good Friday” Earthquake and Tsunami
  • Tornado Watches, Warnings Issued as Severe Weather Impacts Louisiana, Mississippi, Alabama, & Gerogia
  • After Violent Night, Storms Shift to Ohio and Pennsylvania
  • Preliminary NTSB Report Shows Something other than Turbulence Killed Passenger on New England Flight
About | Careers | Contact | Contests
Terms | Privacy | Ad Choices
Weatherboy is a (R) Registered Trademark of isarithm LLC, All Rights Reserved.
All content herein is Copyright by Isarithm LLC 1997-2022