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People seek refuge from the searing heat at the beach in Coney Island, New York City. Photo: Andrew Lichtenstein/Corbis via Getty Images)

An "oppressive and dangerous" heat wave that's gripping much of the U.S. has left at least 3 people dead and caused the cancellation of several public events, NBC News reports.

Why it matters: The National Weather Service said the heat was affecting much of the Midwest to the eastern U.S. this weekend. 147 million people in the Central and Eastern U.S. were under a heat advisory or excessive heat warning. "Very warm overnight temperatures limit recovery from daytime heat," the NWS said.

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

The state of play: The NWS said the greatest threat Sunday would be from the Carolinas to Maine, where daytime highs in the mid to upper 90s combined with high dewpoints will make it feel like its near 100 to 110 for many."

  • A cold front hitting the Plains Saturday was forecast bring showers and thunderstorms to parts of the Central Plains and Midwest by Sunday.
"Some storms could be severe, with the best chance for this across the Upper Midwest and Upper Great Lakes tonight. Locally heavy rainfall could lead to flash flooding as well in these regions."

The big picture: The mayors of Boston, New York City, Philadelphia and Washington, D.C., declared heat emergencies. New York City and Baltimore issued Code Red Extreme Heat Alerts.

In Arkansas, former New York Giants offensive lineman Mitch Petrus died on Thursday night after being struck by heat stroke, according to Kark-TV.

In Maryland, health officials attributed the deaths of a Prince George's County man and a Worcester County woman to the heat, per NBC News.

  • Baltimore logged a heat index of 122 degrees on Saturday evening. It's one of several locations experiencing a heat index in the triple digits, CBS News notes.

In Michigan, more than 200,000 properties were without electricity after storms, Michigan Live reports.

In New York, more than 9,000 customers lost power earlier Saturday in Far Rockaway, Queens and on Long Island, PSEG Long Island said. The outage disrupted some train services, said Mayor Bill de Blasio, who noted power was restored to most customers.

  • New York City authorities canceled a Times Square commemoration of the 1969 Moon landing and an outdoor festival at which soccer star Megan Rapinoe, musician John Legend and "The Daily Show" host Trevor Noah were due to appear, per AP.

In Chicago, several outdoor events were canceled, but the Pitchfork Music Festival went ahead with 3 air-conditioned "cooling buses" for festival-goers, the Chicago Sun-Times reports.

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

What's next?: The NWS predicts the cold front should progress slowly south and eastward, reaching the East Coast by Monday, "finally bringing a much needed relief to the relentless heat."

  • Showers and thunderstorms would accompany this front, with heavy rainfall possible across parts of the Tennessee, lower Ohio and into the Mid-Atlantic states Monday, the NWS said. There's a "slight risk of flash flooding" in this region.

Go deeper:

This article has been updated with more details on the latest weather conditions throughout.

Go deeper

Federal judge blocks Biden's vaccine mandate for federal workers

President Biden speaking from Eisenhower Executive Office Building on Jan. 21. Photo: Yuri Gripas/Abaca/Bloomberg via Getty Images

A federal judge in Texas blocked the Biden administration from enforcing its coronavirus vaccine mandate for federal workers on Friday, citing the outcome of last week's Supreme Court ruling that nullified the administration's vaccine-or-test requirement for large employers.

Why it matters: It's a blow to President Biden's efforts to increase the U.S.' vaccination rates, though much of the federal workforce has already been vaccinated against the virus.

Updated 5 hours ago - Politics & Policy

Omicron dashboard

Illustration: Brendan Lynch/Axios

  1. Health: Pfizer and Moderna boosters overwhelmingly prevent Omicron hospitalizations, CDC finds — Omicron pushes COVID deaths toward 2,000 per day — The pandemic-proof health care giant.
  2. Vaccines: The case for Operation Warp Speed 2.0 — Starbucks drops worker vaccine or test requirement after SCOTUS ruling — Kids' COVID vaccination rates are particularly low in rural America.
  3. Politics: Biden concedes U.S. should have done more testing — Arizona says it "will not be intimidated" by Biden on anti-mask school policies.
  4. World: American Airlines flight to London forced to turn around over mask dispute — WHO: COVID health emergency could end this year — Greece imposes vaccine mandate for people 60 and older — Austria approves COVID vaccine mandate for adults.
  5. Variant tracker
Updated 6 hours ago - Economy & Business

Janet Yellen co-opts Reaganomics phrase for new Davos speech

Treasury Secretary Janet Yellen at a speech this week. Photo: Alex Wong/Getty Images

The U.S. needs to focus on increasing its productive potential, Treasury Secretary Janet Yellen told world leaders Friday, calling for what she terms "modern supply side economics."

Why it matters: She co-opted a phrase traditionally used by political conservatives to describe low-tax and deregulatory policies — and framed the Biden administration's initiatives as the best path forward to achieve greater national prosperity.