‘Bomb cyclone’ threatens temperatures colder than Mars on East Coast

Parts of the Northeast will be colder than Mars by the end of this week thanks to a weather phenomenon called a “bomb cyclone.”

A massive “bombogenesis” — an area of rapidly declining low pressure — will wreak havoc on the Northeast this week, threatening hurricane-force winter wind gusts and blinding snow.

The bombogenesis will result in what’s known as a “bomb cyclone.”

And the bomb cyclone, expected to strike Thursday, will likely dump 6 to 12 inches of snow in New England and hurl 40- to 60-mph gusts.

At Mount Washington Observatory in New Hampshire, the temperature will plunge to minus 35 degrees Friday night into Saturday, weather observer Taylor Regan said.

At last check several days ago, the high temperature on Mars was minus 2 degrees Fahrenheit.

It’s not just New England suffering winter’s wrath. Freezing rain, sleet and snow are smothering parts of the Southeast Wednesday.

Florida gets walloped with snow

From Maine to Florida, every East Coast state has at least one weather advisory, winter storm watch, winter storm warning or blizzard warning. That’s 1,500 miles of severe weather alerts.

In Tallahassee, Florida, Ernst Beliard said he’s never seen snow in his 21 years there.

“Yo its actually snowing in Tallahassee,” he tweeted.

Indeed, Tallahassee had not seen measurable snowfall since 1989, CNN meteorologist Michael Guy said.

The unusually frigid conditions sweeping Florida led to the closures of Florida State University and Florida A&M University on Wednesday.

They also forced the temporary closures of Orlando water parks and prompted authorities to open dozens of emergency shelters.

Deep freeze across South Carolina

In the Palmetto State, palm trees will likely be covered in ice and snow — and could knock down power lines, the National Weather Service in Charleston said.

“Forecasters expect below freezing temperatures to last for much of the week throughout the entire state,” South Carolina Emergency Management said.

Charleston is slated to get 4 inches of snow late Wednesday. That would be the most in one day since 1989, CNN meteorologist Brandon Miller said.

Runways at Charleston International Airport closed Wednesday, and South Carolina Highway Patrol reported dozens of accidents as snow fell.

Authorities urged people to stay off the streets as 1,000 snow plows and salt trucks treated roads and bridges, the state’s department of transportation said.

State of emergency in Georgia

Georgia Gov. Nathan Deal issued a state of emergency Tuesday for 28 coastal counties ahead of the storm.

Savannah/Hilton Head International Airport — typically booming with tourists this time of year — closed Wednesday “due to severe winter weather conditions,” the airport said.

But the entire state is suffering bitter conditions. In the south-central city of Tifton, Matthew Stuart Reid shot drone footage of the snowfall, set to the music of “Winter Wonderland.”

Deadly freeze

At least 12 people in the US have died this week in cold-related deaths, officials said.

Six deaths were reported in Wisconsin, four in Texas, one in North Dakota and one in Missouri.

The Texas deaths included two homeless people in Houston who were exposed to freezing conditions, Houston Police Chief Art Acevedo tweeted.

Bone-chilling cold, intense snow in Northeast

New York City hasn’t warmed up above freezing since Christmas — and the deep freeze will just get worse.

The bombogenesis will usher in another round of single-digit or sub-zero temperatures to the Northeast.

New York City and Philadelphia will dip to 3 degrees this weekend, Miller said. Boston will plunge to minus 7.

And with 4-6 inches of snowfall expected in New York, sanitation workers are getting ready to deploy 2,200 plows to help clear the streets.

That snow, combined with “exceptionally strong winds,” means crews will be working in near-whiteout conditions, New York City Sanitation Commissioner Kathryn Garcia said.

But despite the extreme cold in the eastern US, there have been more record highs set (381) than record lows (353) over the past week, Miller said.

Some of the cities breaking record-high temps include Los Angeles (85 degrees last Friday) and Fort Collins, Colorado (68 degrees last Friday).

The coolest cold-weather terms to memorize this winter

If you’re feeling abnormally chilly lately, go ahead and blame the bomb cyclone. It’s the hottest cold-weather term at the moment, probably because it combines two already alarming words.

Bomb? Cyclone?! It’s gotta be bad.

Believe it or not, a bomb cyclone itself is actually not that dramatic, even though the bitter, dangerous cold it produces definitely is. Here’s a definition, along with a few other surprising and weird winter-weather terms.

Bomb cyclone: A bomb cyclone happens when a cyclone, which is a low-pressure rotating storm system, experiences a dramatic drop in atmospheric pressure over a short period of time. This process is known as bombogenesis, an equally cool weather word. Bomb cyclones can help draw colder air in from the North, which could, say, blast areas in the northern hemisphere with icy temperatures.

Snow eater: Also called a Chinook, this is a specific type of foehn wind that occurs in the Rocky and Sierra Mountain areas of the US. Foehn winds are warm, dry winds that blow down the lee side of a mountain — the side sheltered from winds — and are common in the winter.

Thundersnow: Thundersnow is simply thunder and lightning during a snowstorm. It may not be as alarming as it sounds, but it’s still dangerous because it combines the hazards of a thunderstorm with the decreased visibility and ground accumulation of a snowstorm. Opposite of fun.

Hoarfrost: An ugly word for a rather pretty phenomenon. Hoarfrost is the heavy frost you see lining plants, trees and other things when the air is below freezing and the atmosphere is moist. It’s basically bulky, frozen dew. Fun fact: “Hoar” is an Old English word describing old or aged-looking things, so “hoarfrost” makes things look old by covering them in white “hair.”

Arctic blast: This is basically just a sexy way of saying, “a strong cold front.” While we typically think of the word “Arctic” as just describing things that are really cold, in the case of an Arctic blast, that is literally where the cold is coming from — the Arctic!

Polar vortex: We often think of a “polar vortex” as being a fleeting thing that gets blamed when it’s really cold, but the polar vortex is actually a constant thing. It’s an area of low pressure that circles the North and South Poles. The term comes up sometimes when it’s cold because polar vortices strengthen in the winter. And for the northern hemisphere, this means a higher chance of arctic air being blown in.