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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

Updated 3 hours ago - Politics & Policy

U.S. sounds alarm on Ukraine

Conscripts line up at a Russian railway station yesterday before departing for Army service. Photo: Sergei Malgavko/TASS via Getty Images

The Biden administration is "deeply concerned" by new intelligence — detailed for Axios and other outlets — showing Russia stepping up preparations to invade Ukraine as soon as early 2022.

Why it matters: Most of this was known from public sources and satellite imagery, but the administration is sending a stronger signal by releasing specific details from the intelligence community.

CNN fires Chris Cuomo

Photo: Kevin Mazur/Getty Images for CNN

CNN said Saturday evening it has fired one of its star anchors, Chris Cuomo, following new revelations from a legal review made by the company into Cuomo's involvement in the management of his brother's sexual harassment scandal.

Why it matters: Saturday's firing speaks to how much pressure CNN was under by employees and critics to address Cuomo's behavior.

Updated 6 hours ago - Energy & Environment

Electric car prices could go up before they come down

Illustration: Eniola Odetunde/Axios

The secret to affordable electric vehicles is cheaper batteries. But after years of falling prices, battery costs are now headed in the wrong direction.

Why it matters: Costlier batteries could drive up the price of electric vehicles — threatening the auto industry's transition away from fossil fuels, and, in turn, society's fight against climate change.