US winter storm will bring frostbite within minutes

Media caption,

BBC Weather’s Matt Taylor looks in detail at the dangerously cold conditions

By Nadine Yousif

BBC News, Toronto

Plunging temperatures wreaking havoc across the US and Canada can lead to frostbite on bare skin in only five to 10 minutes, experts are warning.

A powerful Arctic winter storm has placed more than 135 million people under weekend weather alerts ahead of the busiest travel days of the year.

The alerts stretch from coast to coast and reach as far south as the US-Mexico border and Florida, the Sunshine State.

Major airports have cancelled thousands of flights as the storm intensifies.

The cold snap could bring the iciest Christmas in decades, say forecasters.

The National Weather Service (NWS) said temperatures of -50F (-45C) and -70F were possible by the end of this week in some parts of the country.

They warned that even in major metro areas, like the city of Des Moines, Iowa, frostbite will be a major danger.

What is frostbite?

  • Caused when blood flow to the extremities is reduced – a natural response to the cold
  • Symptoms usually begin with the affected parts feeling cold and painful
  • In extreme cases, the tissue can die and surgery – even amputation – could be necessary
  • Someone with frostbite should be taken into the warm and medical advice sought

Meteorologists say the winter storm could become a “bomb cyclone” by Friday.

Bomb cyclone is a term given to an explosive storm that intensifies rapidly, with its central air pressure dropping by at least 24 millibars in 24 hours.

“This is not like a snow day, when you were a kid, this is serious stuff,” President Joe Biden said in a White House briefing on Thursday.

The Arctic air mass is projected to bring strong wind gusts and temperature of 15F (-9.4C) to El Paso, Texas, where newly arrived undocumented migrants are sleeping rough on city streets.

The storm is already wreaking havoc from Colorado to Wyoming, and north in Minnesota.

In just 12 hours, Wyoming Highway Patrol received 787 calls for help and recorded 104 crashes.

In South Dakota, Rosebud Sioux Tribe emergency manager Robert Oliver said workers were trying to clear roads which had about 10 feet (3m) of snow in some sections.

Mr Oliver said authorities did not have enough equipment, and in one instance the rescue of people stranded in their homes had to be halted as the hydraulic fluid in heavy equipment froze.

In addition to the storm itself, there are fears of power failures – some providers are already urging customers to turn down their thermostats.

The governor of New York state, Kathy Hochul, declared a state of emergency in anticipation of the storm.

The threat of flooding and ice jams are “going to wreak a lot of havoc in our community”, she said. Ice jams happen when large pieces of ice block the flow of a river and can cause flooding.

The governors of Kentucky, North Carolina, West Virginia, Georgia and Oklahoma have also declared states of emergency, while Wisconsin declared an “energy emergency”.

Media caption,

WATCH: Extreme cold and blizzard conditions are causing chaos – and could be deadly

Ohio governor, Mike DeWine, called the weather a “unique and dangerous situation”, particularly as people travel to be with loved ones over Christmas.

Florida is projected to see its coldest Christmas in 30 years.

The NWS has described it as a “once-in-a-generation” winter weather event, saying on Thursday that “life-threatening wind chills” will strike the east coast on Friday.

The NWS warned more than 100 daily cold temperature records could be tied or broken over the next few days.

  • In Colorado, temperatures dipped to a record-breaking low of -9F from 42F on Thursday
  • The city of Cheyenne, Wyoming, set a record for its greatest one-hour temperature drop, after going from 43F to 3F within 30 minutes. Elsewhere in the western state, temperatures have dropped as low as -35F
  • Nearly a dozen record low temperatures were also set in neighbouring Montana
  • In Chicago, a winter storm warning is in effect until Saturday, bringing with it several inches of snow and winds topping 50mph (80km/h)
  • In Canada, much of Ontario and parts of Quebec are also bracing for a major winter storm that is expected to last through the Christmas weekend

More than 5,300 flights in the US have already been cancelled on Thursday and Friday, according to the flight-tracking site FlightAware.

In anticipation of travel disruptions, major airlines including United, Delta and American have offered to waive fees for travellers who wish to reschedule their flights.

Roads along the Colorado-Wyoming border were closed on Wednesday due to nearly zero visibility.

Image source, Getty Images

Image caption,

Travellers at Chicago’s O’Hare International Airport have been met with flight delays and cancellations on Thursday

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