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Satellite image showing the comma-shaped cloud pattern associated with the intensifying storm over the Plains. Image: CIRA/RAMMB/NOAA.

A powerful storm the National Weather Service says is "of historic proportions" stranded hundreds of people and left thousands without power Wednesday night after it intensified into a raging blizzard across the Plains. It brought with it hurricane-force wind gusts, widespread flooding and white-out conditions to multiple states from Colorado to the Dakotas.

Why it matters: This storm's strength and rate of intensification is unusual for the Plains states, with low pressure records likely to be challenged or broken in multiple locations. In general, the lower the air pressure, the stronger the storm.

The minimal central pressure may hit the low 970s or upper 960s millibars Wednesday when it peaks in eastern Colorado or western Kansas, threatening March and all-time state records. So far, the minimum pressure of 971 millibars recorded in Colorado would be a new state record if it is confirmed.

  • The storm brought air and road travel to a screeching halt from Dallas to North Dakota, with blizzard conditions and winds gusting upwards of 80 mph forecast for a vast stretch of real estate.
  • Xcel Energy said about 10 p.m. 121,270 customers remained without power in Colorado after 2,214 separate outages, according to The Denver Post.
A tweet previously embedded here has been deleted or was tweeted from an account that has been suspended or deleted.
  • Major airline hubs, including Denver, Dallas and Chicago, felt impacts from this storm, leading to delays and cancellations. In Denver, visibility was reduced to essentially zero in heavy snow along with winds gusting to 75 mph, effectively shutting down the airport.
  • At least one person has died in an incident related to the storm. Colorado State Patrol trooper died during a blizzard after being hit by a car while helping another driver whose car had slid off Interstate 76 near Denver.

The big picture: This particular storm has intensified so rapidly that it qualifies as a "bomb cyclone," a non-technical moniker applied to storms that undergo a process known as bombogenesis, through which their minimum central air pressure drops by at least 24 millibars in 24 hours.

  • Typically, rapidly deepening, non-tropical storms such as this tend to occur over oceans, where the contrast between air masses and availability of moisture is maximized.
  • That, plus how low the air pressure is forecast to go, is what makes this one unique.
  • It's the result of the combination of two jet stream disturbances into one, as detailed by meteorologist Philippe Papin on Twitter.

At least one all-time low pressure record was set Wednesday, in Pueblo, Colorado.

A tweet previously embedded here has been deleted or was tweeted from an account that has been suspended or deleted.

The impact: The Denver metro area was deep in snow after being hit by a severe a blizzard and strong winds on Wednesday afternoon. The ferocity of storm had eased by Wednesday night. East of there, in the Colorado Plains, winds were stronger, with snowfall of a foot or more.

  • Portions of I-25, I-70 and other roadways in Wyoming, Colorado and Nebraska were closed due to the combination of wind, snow and low visibility. Heavy snow, with snowfall rates of greater than 2 inches per hour at times, fell in Colorado, Wyoming and Nebraska, with heavy snow forecast to spread to North and South Dakota as the evening goes on.
  • The winds have been ferocious, with a gust to 97 mph clocked in Colorado Springs, and an 80-mph gust at Denver International Airport. Widespread high winds have also caused damage in northern Texas.
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There's also a wet side to this storm, which caused problems in many regions.

  • The storm has dumped heavy rain on top of a deep snowpack across the Midwest and Upper Midwest, leading to a threat of severe river flooding, ice jams and roof collapses from the weight of water-laden snow.
  • The National Weather Service said late Wednesday widespread flooding had been reported in eastern Nebraska, which would continue through the night. Significant flooding impacts were likely in parts of eastern South Dakota, southwest Minnesota
    and northwest Iowa, the forecaster said.
  • Severe thunderstorms, including possible tornadoes, exist where the low pressure area is drawing warm air from the Gulf of Mexico, threatening Arkansas, Mississippi and Tennessee, in particular, on Wednesday afternoon.
  • Early in the day a squall line moved through Texas, bringing 80-mph wind gusts to the Dallas metro region.

What's next: By Thursday, the storm was moving northward into Canada and weaken, leaving floodwaters, wind damage and extensive snow cover in its wake.

Go deeper

Updated 33 mins ago - World

In photos: Pope Francis spreads message of peace on first trip to Iraq

Iraqis dressed in traditional outfits greet Pope Francis upon his arrival at Erbil airport, the capital of the northern Iraqi Kurdish autonomous region, on March 7. Photo: Safin Hamed/AFP via Getty Images

Pope Francis was on Sunday visiting northern areas of Iraq once held by Islamic State militants.

Why it matters: This is the first-ever papal trip to Iraq. The purpose of Francis' four-day visit is largely intended to reassure the country's Christian minority, who were violently persecuted by ISIS, which controlled the region from 2014-2017.

Cuomo faces fresh misconduct allegations from former aides

New York Gov. Andrew Cuomo during a February press conference in New York City. Photo: Seth Wenig/Pool/AFP via Getty Images

The office of New York Gov. Andrew Cuomo (D) was on Saturday facing fresh accusations of misconduct against his staff, including further allegations of inappropriate behavior against two more women. His office denies the claims.

Driving the news: The Washington Post reported Cuomo allegedly embraced an aide when he led the U.S. Department of Housing and Urban Development and that two male staffers who worked for him in the governor's office accused him of routinely berating them "with explicit language."

In photos: Protesters rally for George Floyd ahead of Derek Chauvin's trial

Chaz Neal, a Redwing community activist, outside the Minnesota Governor's residence during a protest in support of George Floyd in St.Paul, Minnesota, on March 6. Photo: Kerem Yucel/AFP via Getty Images

Dozens of protesters were rallying outside the Minnesota governor's mansion in St Paul Saturday, urging justice for George Floyd ahead of former Minneapolis police officer Derek Chauvin's trial over the 46-year-old's death.

The big picture: Chauvin faces charges for second-degree murder and manslaughter over Floyd's death last May, which ignited massive nationwide and global protests against racism and for police reform. His trial is due to start this Monday, with jury selection procedures.