'Bomb Cyclone' Due to Hit Central United States

'Bomb Cyclone' Due to Hit Central United States

Meteorologists referred to the storm as a "bomb cyclone", a winter hurricane that forms when the barometric pressure drops 24 millibars in 24 hours. This storm has dropped 27 millibars since Tuesday morning and continues to strengthen.

"And yes, that is the equivalent of a Category 1 hurricane!"

A storm system that could generate severe weather in Alabama tomorrow is bringing "historic" blizzard conditions to parts of the Great Plains today, according to the National Weather Service. Other hazards include heavy snow and severe storms with possible tornadoes and flooding.

Winter storm warnings are in effect in multiple states, including parts of Colorado, Wyoming, Nebraska, and South Dakota, CNN reports. "Travel will be treacherous in locations, and the combo of snow and wind will likely lead to power outages", the NWS warned.

A large swath of the USA was under a variety of warnings, advisories, and warnings.

Travel will be unsafe, if not impossible, at times, across areas where the blizzard warning has been issued.

Meanwhile, thunderstorms were expected to keep pushing eastward Wednesday from the Southern Plains to the lower to middle Mississippi Valley.

The Weather Channel has dubbed it "Winter Storm Ulmer", and says it's bringing risky conditions, high winds, and possible structural damage, such as power outages and downed trees.

The National Weather Service in Boulder, Colorado, issued a blunt message Tuesday: "Please cancel any travel plans Wednesday afternoon and evening especially east of I-25, and stay tuned for further updates!"

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The rain component of the storm, combined with very strong winds, creates the potential for damage to power lines and street flooding may occur in places where rain falls and drains have not been cleared, according to the weather service.

"We're going to see possibly near-zero visibility over the Eastern Plains", Bowen said, according to Colorado Public Radio.

More than 1,000 flights have been canceled Wednesday, according to FlightAware.

An outbound Continental Airlines jet gets de-iced at Denver International Airport January 05, 2017.

Combined with the storms from the past few weeks, the Colorado Avalanche Information Center has an avalanche warning (level 4 of 5) for Wednesday, and travel in the backcountry is not recommended.

On Wednesday, South Dakota's governor also ordered the closure of state government offices in 39 central and western counties due to winter conditions.

By Wednesday morning, some roads in the northeastern portion of Nebraska were already flooded.

Winds could - and have - been clocked at 90 miles per hour.

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