Summer's first heat wave is expected to keep the Northeast and Mid-Atlantic states sizzling Wednesday.
The areas roasted Tuesday under unrelenting sun and many areas were putting up with a night in which temperatures in urban areas were failing to fall below 80 degrees.
The National Weather Service issued heat advisories for Wednesday ranging over a wide swath from Kentucky to Vermont. Hot temperatures and high humidity are expected to combine at oppressive, illness-causing heat-index levels, the service warned.
The heat index in several areas is expected to surpass 105 around the Baltimore-Washington, D.C. area, and over 100 in areas around southeastern Pennsylvania, New York City, northeastern New York state, western Massachusetts and central Vermont.
"The heat coupled with increased humidity, hazy skies and poor air quality will make the day ugly for anyone who has to venture outside," said The Weather Channel.
Relief is expected Thursday and Friday as an Atlantic upper-level disturbance backs toward the coast and a Midwest front finally begins to creep eastward, The Weather Channel said.
Tuesday a record-breaker
Tuesday as record-setting temperatures soared past 100 from Virginia to Massachusetts, utility companies cranked up power to the limit to cool sweating masses and railroad tracks were so hot commuter trains had to slow down.
"It's brutal," said construction worker Pat McHugh, 49, his face shiny with sweat, as he took a break in New York City. "Worst heat on the job in 10 years.
The temperature broke records for the day in New York, where it hit 103, and in Philadelphia, where it reached 102.
It was also over 100 in cities from Richmond, Va., to Boston, and Providence, R.I., and Hartford, Conn., also set records.
"It's safe to say this is one of the hottest days in about a decade for many locations in the Northeast and even inland," said Sean Potter of the National Weather Service. "You'd go back to 2001 or maybe 1999 to find a similar heat wave."
With people cranking up the air conditioning, energy officials said there was tremendous demand for electricity, but the grid didn't buckle.
Few power problems were reported and the operators of the regional electrical systems that serve the Mid-Atlantic, New England and New York said they had ample capacity. Usage appeared to be falling just short of records set throughout the Northeast during a major heat wave in 2006.
Heat slows many
Still, it was oppressive.
New Jersey Transit says its commuter trains ran 20 to 30 minutes late during Tuesday's evening rush and some were canceled.
About 1,500 passengers on a New York-to-Trenton, N.J., train were stranded for 25 minutes when it lost power. Transit spokesman Dan Stessel says the crew restored power long enough to get the train into a station and passengers were put aboard other trains.
Amtrak says it had 15-minute delays Tuesday afternoon between Baltimore and Washington, D.C., because two commuter trains stalled due to electrical problems. A spokeswoman says it's unknown if those problems were heat-related.
On the baking streets of the Bronx, 14-year-old Miguel Pena and 13-year-old Vincent Quiles walked their bicycles up a steep hill, white handkerchiefs around their heads to keep the sweat from their eyes.
"Man, this stinks," Miguel said. "We just got out of school and this is supposed to be when we have fun, but this is too much. We thought it would be cooler on the bike, but now we're going home. It's just too hot."
"You can't breathe out here," Vincent added.
Reds infielder Miguel Cairo wiped the sweat off his face as he walked into the visiting clubhouse in New York, grateful to be out of the sweltering conditions at Citi Field.
"I think I'm back in Venezuela," he said.
Oppressive conditions forced two East Coast tracks to call off horse racing cards, made life difficult for golfers practicing for the women's U.S. Open in Pennsylvania and sent ballplayers searching for any way to stay cool.
Off the field, in downtown Philadelphia, pedestrians and drivers appeared to move a little more slowly in the heat, which combined high humidity with clear sunny skies that made sidewalks hot and asphalt sticky.
"Hydrate," President Barack Obama reminded a group of reporters as they left the Oval Office at the White House.
Meteorologists in some places began calling the hot stretch a heat wave, a phenomenon defined in the Northeast as three consecutive days of temperatures of 90 or above. New Jersey's largest city, Newark, handily beat that threshold, hitting 100 for the third day in a row. Temperatures in the Mid-Atlantic region are expected to be in the high 90s to 100 again on Wednesday.
Workers at the Marine Mammal Stranding Center in Brigantine, N.J., used tubs of ice cubes to help four sick or weakened seals keep cool.
It wasn't much easier on animal lovers. In Massachusetts, Katie Wright was determined to follow through on her promise to take her children to a zoo.
"It's pretty ridiculous," Wright said as her 3-year-old son Jackson and 2-year-old daughter Emery watched owls and hawks at the Massachusetts Audubon's Drumlin Farm Wildlife Sanctuary in Lincoln. "But we wanted to get out, so we brought hats, sunscreen, extra water and then promised the kids lunch at an air-conditioned restaurant."
At his Manhattan newsstand, a steel kiosk that soaks up sun like a sponge, vendor Sam Doctor said the only way to keep cool was to splash his head with water, but he acknowledged that his system wouldn't last. Both of his soda-cooling refrigerators had already conked out by midmorning.
"When it's 100 degrees out there, it's 110 in here," he said, still smiling as he served customers.
Field Notes: What is the hottest job in the city?
In Philadelphia, where the temperature was in the 80s before 7 a.m., 45-year-old Davey Adams waited in a subway station that was stagnant even before the morning commute began in earnest. He had spent the weekend in air-conditioned bliss at his son's house in New Jersey but had to return to his job Tuesday as a forklift driver in a warehouse.
He said he planned to use "cold water and a washcloth" draped over his head to keep cool.
In New York, 13 firefighters were treated at a hospital after suffering dehydration and exhaustion while battling a blaze in Queens. The 42-year-old lieutenant governor of Massachusetts spent Monday night in a hospital after marching in five parades in 90-degree heat.
Deaths blamed on the heat included a 92-year-old Philadelphia woman whose body was found Monday and a homeless woman found lying next to a car Sunday in suburban Detroit.
Even Queen Elizabeth II, a familiar visitor to exotic and steamy places, was subject to the grueling heat on her first visit to New York City in more than three decades.
Dressed in a summery floral dress and hat, the 84-year-old monarch paid tribute to the victims of the Sept. 11 attacks, placing a wreath of flowers and chatting with victims' relatives.
"She's beautiful. She looks like she could be anybody's grandmother," said Debby Palmer, who lost her husband, Battalion 7 Chief Orio Palmer. "And she looks like royalty, because we're all sweating and she was quite the lady — no sweat whatsoever! Her lipstick was just so."
There was no end in sight.
The hot air is "sitting over the top of us, and it's not really going to budge much for the next day or two," said Brian Korty, a meteorologist with the National Weather Service in Camp Springs, Md. After that, he said, a system coming in off the Atlantic Ocean would bring in cooler weather.
A certain segment of the public might look at the thermometer and blame global warming, but the two things aren't necessarily related, said Gavin Schmidt, at the Center for Climate Systems Research at Columbia University.
"One winter, one heat wave, one snowstorm is not significant. You need statistics over a decade," he said, noting that day-to-day weather and global temperature are two different things.
That said, he added, "the planet is getting warmer. 2000-2009 was the warmest since the 1850s. And the last 12 months seem to be the warmest."
So get used to it.
The Associated Press contributed to this report.