New York, Washington Wilt Under Weekend Heat and Humidity IMAGENew York, Washington Wilt Under Weekend Heat and Humidity IMAGE

New York’s Central Park may reach 96F (36C) degrees Saturday and Washington is set to hit 100F, the National Weather Service said. Both highs would threaten 1988 records. Highs will be back to 95 on Sunday and 77 through the night, while Washington is set to reach 98 with a low of 76. The heat has also caused delays on Amtrak and New Jersey Transit as rails, bridges and overhead wires can expand, disrupting or slowing trains.

“It should be a hot next couple of days,” said Marc Chenard, a senior branch forecaster at the US Weather Prediction Center. “It’s definitely pretty humid, too, so there are heat advisories out for both cities.” Indeed, an unbroken string of heat advisories stretches from Indiana to western Massachusetts.

In New York, the humidity will make temperatures feel close to 100 and will add to energy demand that soars when residents turn to air conditioning for relief. Across parts of Queens, Con Edison said Friday it was reducing voltage in the area by 8% and asking about 130,000 customers to cut back on demand as its crews make repairs.

Overnight temperatures will hit 78 in Manhattan, which will offer little relief for either people or energy demand. Highs will be back to 95 on Sunday and 77 through the night, while Washington is set to reach 98 with a low of 76.

The heat has also caused delays on Amtrak and New Jersey Transit as rails, bridges and overhead wires can expand, disrupting or slowing trains. Both New York Mayor Eric Adams and Governor Kathy Hochul warned residents to protect themselves from the heat.

Some of the worst conditions will be in Philadelphia, where the high is forecast to reach 97 and humidity will make it feel closer to 102 on Saturday, the weather service said.

A large area of high pressure has been searing the eastern US for the past week but will start to relax a bit going into next week, which should bring some relief, Chenard said. It won’t completely exit the region, though, and long-range forecasts call for July to be warmer than normal for large parts of the US.

“This will be a little hotter than it should be for late June and July,” Chenard said.

Why is NY so humid?

Also, New York’s enormous population, human activity, and vast amounts of large buildings and streets, which absorb sunlight during the day, contribute significantly to the urban heat island effect. Were it not for this phenomenon, its climate would probably be within the humid continental temperature range.

Why is Indiana so humid?

The Gulf of Mexico is a major player in Indiana’s climate. Southerly winds from the Gulf region readily transport warm, moist air into the state. This humid air collides with continental polar air brought southward by the jet stream from Canada.

What part of US is most humid?

Most Humid States, Ranked

That’s right: Alaska is one of the most humid states! In fact, Alaska reports an average RH of 77%, with the next highest state, Florida, reporting a 74% average. Despite Florida being hot and balmy, Alaska has high humidity levels because of its milder, lower temperatures

Which country has the worst humidity?

Most Humid Countries In The World
  • Bangladesh. …
  • Papua New Guinea. …
  • Indonesia. …
  • Myanmar. Average Annual Relative Humidity: 80% …
  • Liberia. Average Annual Relative Humidity: 80% …
  • Brunei. Average Annual Relative Humidity: 80% …
  • Equatorial Guinea. Average Annual Relative Humidity: 80% …
  • Columbia. Average Annual Relative Humidity: 81%

A dangerous heat wave is bringing sweltering temperatures to much of the US this weekend, including over parts of the Ohio Valley and mid-Atlantic. Meanwhile, a tropical system could develop this weekend through the southwest Gulf of Mexico. Here’s the latest:

• Millions of Americans under heat alerts: More than 100 million Americans, including those in the highly populated I-95 corridor, are under heat alerts through the weekend. A heat emergency is in effect for Washington, DC, where upper 90s and even triple-digit temperatures for the first time since 2016 will be possible.

• Tropical system could develop: A new tropical system could develop quick this weekend on the heels of Alberto. A system with a medium chance of tropical development could mimic Alberto’s track through the southwestern Gulf of Mexico and into northeastern Mexico this weekend, according to the National Hurricane Center. While this system is not expected to be as large as Alberto, it could bring more rain to South Texas and trigger new flooding concerns there and along the Gulf Coast.

• Sizzling temperatures return to California: Heat alerts in California span parts of southern and central California, including in Colusa County, where firefighters are working to rein in the Sites Fire spanning over 19,100 acres. High temperatures between 100 and 106 are expected and could hinder firefighting efforts. California is seeing an active early fire year, according to the California Department of Forestry and Fire Protection. Since the start of the year, more than 89,700 acres have burned, compared to 5,747 acres during the same period last year.

• ‘Catastrophic flooding’ in Iowa: On Saturday, Iowa Gov. Kim Reynolds issued a disaster proclamation for 21 counties in northwest Iowa and directed all available state resources to assist Rock Valley and other communities in response to “catastrophic flooding.” In Rock Valley, all residences north of Highway 18 were being evacuated amid high floodwaters. There’s a level 2 of 4 risk of excessive rainfall Saturday over northern Iowa, and that corner of the state has seen an estimated 10-plus inches of rain based on radar. The heaviest rain is expected further east.

The heat wave’s prolonged nature is a serious concern. New York City residents could experience 90-degree temperatures or higher this weekend into early next week. The stretch would be the longest ever in June in the city. For the first time this year, the National Weather Service has issued a heat advisory for the city.

Gov. Kathy Hochul on Tuesday announced the opening of the state’s emergency operations center, which she said will monitor conditions and share resources with emergency management personnel across the state’s 62 counties. Earlier this week, New York City Mayor Eric Adams said cooling centers will be open across the city.

Philadelphia has extended a heat health emergency through midnight on Sunday, according to the state’s Department of Public Health. Philadelphia has heat alerts in place through the weekend, with temperatures expected to feel close to 99 degrees.

New Jersey’s heat alerts are in effect until 8 p.m. Sunday, according to the National Weather Service. Heat index values Friday are expected to reach 95 to 100 and it will feel around 100 degrees across the state Saturday and Sunday.

Heat is also returning in full force in the West following a brief break. Heat alerts are already in place for portions of California, Arizona and Utah. Temperatures are expected to jump back up to 10 to 15 degrees above normal for Salt Lake City, Las Vegas, Sacramento and Bakersfield, California, through the weekend.

CNN’s Allison Chinchar, Eric Zerkel, Brandon Miller, Taylor Ward, Sara Tonks, Taylor Galgano, Andy Rose, Josh Campbell, Rebekah Riess, and Kara Devlin contributed to this report.

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