SQUAM LAKE, N.H. — As New England baked in a heat wave Thursday, guests at one campground were keeping their food and beer cold with blocks of ice harvested months earlier from a frozen lake.
And while some relief is expected in the eastern Great Lakes region and New England starting Friday, the National Weather Service said scorching temperatures will linger across the Ohio Valley and Mid-Atlantic region, and even rise in places, including California and Arizona, where they could eclipse 100 degrees (nearly 38 degrees Celsius).
On Squam Lake in central New Hampshire, ice blocks about the size of microwaves that had been packed in sawdust since winter were lifted from an insulated storage hut. It's been a tradition at the rustic Rockywold Deephaven Camps for more than a century, keeping fresh ice available throughout the summer and into the fall.
Angela Wilcox, who has vacationed at the camp for 16 years, took her children and nephews boating Thursday in search of the lake's coldest swimming spot.
''This is the hottest it's ever been, especially in June,'' Wilcox said. ''We're kind of shocked.''
Heat index readings combining temperature and humidity were expected to surpass 100 degrees (37.7 C) in many locations across the country, possibly setting some all-time records, the weather service said, and because record overnight temperatures could prevent natural cooling, heat danger could builda up indoors.
''Those without access to reliable air conditioning are urged to find a way to cool down,'' the service said in its forecast.
In a study published Thursday, a group of scientists said human-caused climate change has drastically increased the odds of experiencing the killer heat baking the Southwestern United States, Mexico and Central America this month. Last year, the U.S. recorded its most heat waves — abnormally hot weather lasting more than two days — since 1936.