BOSTON — Temperatures in many areas of the Northeast U.S. climbed to the mid-40s Fahrenheit on Sunday, a day after the region suffered through temperatures that plummeted into the negative teens and felt like minus 45 to minus 50 degrees with the wind chill.

What You Need To Know

  • In some places Saturday it felt like minus 45 to minus 50 degrees with the wind chill

  • Atop Mount Washington in New Hampshire, the temperature rose to a relatively balmy 18 degrees on Sunday after nosediving to minus 47 a day earlier

  • The wind chill there was measured in excess of minus 108 degrees

  • There was some collateral damage from the extreme cold, including at a Boston hospital that closed its emergency department when a pipe froze and burst

Atop 6,288-foot Mount Washington in New Hampshire, the temperature rose to a relatively balmy 18 degrees (8 Celsius) a day after the actual temperature nosedived to minus 47 F (minus 44 C) and the wind chill was measured in excess of minus 108 degrees.

The warming weather extended to Texas, where thousands of Austin residents were still without power five days after an ice storm knocked out electricity to nearly a third of the city. By Sunday, more than 90% of the city had power, according to Austin Energy. But the lights were still out for 40,000 customers and there was no timetable for completing repairs.

Katy Manganella, 37, grew so fed-up that when Austin Energy came to her neighborhood Sunday with a charging station for residents — but still no repair trucks — she paced in front of the station holding a poster that read, “This pregnant lady is over it!”

“It’s been pretty miserable,” said Manganella, a therapist who is seven months pregnant. “How is there no plan for this?”

Back in the Northeast, there was some collateral damage from the extreme cold and high winds.

Boston Medical Center closed its emergency department after a pipe froze and burst on Saturday night. It is expected to remain closed until Tuesday.

“All patients in the affected areas of the Emergency Department were safely moved to other areas of the hospital," the center said in a tweet.

A Providence, Rhode Island armory being used as a warming center had some of its windows blown out by raging winds on Friday into Saturday, but repairs were soon completed. No one at the Cranston Street Armory was ever in danger, Matthew Sheaff, a spokesperson for Gov. Dan McKee, said in an email Sunday. People simply moved to other rooms, he said.

Boston's Boch Center Wang Theater was forced to cancel two sold-out shows by the Impractical Jokers when a sprinkler pipe in the boiler room burst at about 5 p.m. Saturday, the theater said on social media.

The building was evacuated and the shows canceled when the fire department and theater management determined the system could not be quickly repaired. The shows were rescheduled for late April.

James “Murr” Murray of the Impractical Jokers posted his own apology on Twitter.

“To all of our Boston fans, so sorry about tonight. We were five minutes from showtime, with a full theater, at the first show tonight, and the pipes burst from the cold in Boston and flooded the entire basement of the theater," he said in a short video.

The above average temperatures were expected to stick around awhile, said Bob Oravec, the lead forecaster at the National Weather Service in College Park, Maryland.

“We're having much more milder flow across a good part of the country and we do expect the temperatures to be above average for the upcoming week across the good part of the country, especially the Northeast," Oravec said.

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