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Massive heat wave bakes central, eastern U.S., with sweaty night ahead

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Massive heat wave bakes central, eastern U.S., with sweaty night ahead
A child cools off in a water feature at a park in the Shaw neighbourhood during a heat wave in Washington, U.S., July 20, 2019. REUTERS/Eric Thayer   -   Copyright  ERIC THAYER(Reuters)
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By Barbara Goldberg

NEWYORK (Reuters) – A gargantuan heat wave hunkered down over the central and eastern United States on Saturday, sending residents to cooling centres and inflicting on Washington a heat index of 106 degrees F (41 C) with even steamier conditions in the forecast.

“It’s pretty hot right now from the Plains states all the way through the Mississippi Valley to the East Coast,” said Alex Lamers, a meteorologist with the National Weather Service’s Weather Prediction Center.

Heat is the deadliest of all weather phenomena, according to the weather service, and cities from Chicago to New York urged residents to seek refuge at cooling centres set up in locations ranging from libraries to shopping malls.

Tourists visiting the monuments and museums on the National Mall in Washington endured temperatures approaching 100 degrees F (37.8 C).

About 250 senior citizens returned home on Saturday a day after having to leave a retirement community in Philadelphia when a power failure disabled the air conditioners, forcing many of them into a shelter at West Philadelphia High School, said city spokeswoman Deana Gamble.

Nighttime temperatures have remained so high in the heat wave, which started midweek in the Midwest, that Rockford, Illinois, for the first time since 1918 matched its all-time record by failing to fall below 80 degrees F (27 C) on Friday.

High temperatures combined with high humidity make it feel even hotter, called the heat index.

“Heat stress tends to have a cumulative effect so if you’re not recovering at night, especially if you don’t have an air conditioning unit, you’ll accumulate more heat stress,” Lamers said.

“When it stays warm overnight, it provides a higher launch for temperatures the next day,” he added.

By midday Saturday, Boston’s heat index was 102 F (39 C) and forecast to rise to 105 F (40 C) by late afternoon. New York’s heat index was 100 F (38 C) and forecast to rise to 110 F (43 C), and Washington’s was 106 F (41 C), expected to climb to 111 F (44 C), Lamers said.

Some outdoor activities, including the New York City Triathlon and a running race outside Washington, were cancelled. Others bent their rules to keep attendees cool and safe, including Yankee Stadium, which allowed fans to bring their own bottled water and shading umbrellas and offered hydration stations on all levels of the ballpark.

Sizzling temperatures were expected to persist through Sunday, but relief is in sight, Lamers said.

“A cold front north of us will start shifting south and by Sunday evening, it will make progress towards Boston, Pittsburgh, St. Louis. By Monday morning, it might be reaching Washington, Cincinnati with some rain and thunderstorms,” he said.

(Reporting by Barbara Goldberg in New York; Editing by Will Dunham)

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