Before becoming a bomb cyclone near New England, a significant winter storm is expected to pummel the East Coast, causing severe weather in the South and dropping snow from Tennessee to Maine.
The late season winter storm should produce a plethora of hazards up and down the East Coast, including heavy snow, strong winds, severe weather and flash flooding, according to the National Weather Service.
Of most concern to forecasters are severe thunderstorms, damaging winds and potential tornadoes across the Southeast as well as heavy snow likely from the Appalachians to northern New England and strong wind gusts probable across the Northeast.
Already, the Weather Service is warning of harsh storms in the Southeast, potentially capable of producing hail, damaging wind and tornadoes. There is an enhanced risk of severe weather from Savannah, Georgia on north through the coastal Carolinas and into southeast Virginia. A slight risk has been extended south into central Florida as well.
Forecasters are also warning of heavy rainfall that could lead to flash flooding in parts of northern Florida early Saturday.
Heavy snow should end in parts of the Tennessee Valley early Saturday before moving into the Mid-Atlantic and Northeast, meteorologists said. More than 4 inches of snow is expected from the central Appalachians to the Poconos, Catskills and northern Appalachians.
In the Northeast, snow totals could exceed a foot across higher elevations. Lighter accumulations, around 1 to 3 inches, are possible along the Interstate 95 corridor. Slick travel conditions are possible, according to the Weather Service.
As many as 8 inches of snow are possible in the Berkshires, and closer to 2 inches are forecast in the Worcester area. Eastern Massachusetts should see mainly heavy rain, forecasters noted.
“In addition to the periods of snow, winds will pick up and near-whiteout conditions could unfold, making for treacherous travel conditions by both ground and air,” the Weather Service said. “Wind Advisories have been hoisted from the central Gulf Coast and Southeast on north into the Northeast where wind gusts up to 50 mph are possible.”
In Massachusetts, wind gusts could reach as high as 55 miles per hour on Cape Cod, 45 mph in Boston, 40 mph in Worcester, 35 mph in Springfield and 45 mph in the Berkshires, according to meteorologists.
As the storm moves steadily toward the Northeast on Saturday, it is expected to turn into a bomb cyclone by the time it reaches New England or Atlantic Canada, The Weather Channel reported.
A bomb cyclone occurs when a storm system’s minimum surface pressure drops at least 24 millibars, a measurement of atmospheric pressure, within 24 hours. This can happen when a cold air mass collides with a warm one, causing a rapidly strengthening weather system, a process known as bombogenesis, the NOAA explains on its website.
In the wake of the widespread winter storm, an injection of cold Canadian air is expected to bring one of the last shots of winter-like conditions this season on the East Coast, according to the Weather Service. The federal agency said numerous record cold maximum temperatures are forecast from the Great Lakes on south to the central Gulf Coast. Daytime temperatures should be 20 to 30 degrees below normal throughout the Ohio and Tennessee Valleys on Saturday.
By Sunday morning, lows will be in the teens throughout the Great Lakes and Northeast, with subfreezing temperatures forecast from the central Gulf Coast to northern Florida. Temperatures should be cold enough to break records in the Southeast, the Weather Service said.
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