Aney Rodriguez (top), her sister Nena Rodriguez and friend Mariely Rodriguez, not related, all of Gaithersburg, Md., cool off under the fountains at Georgetown Waterfront Park, in Washington, on June 20. Temperatures across the Northeast are expected to approach triple digits.

William Smalls plays pool and George Williams wipes his head to keep cool at the Kennedy Senior Center in Harlem, N.Y. on June 20. Set up by the Office of Emergency Management in New York, the center serves as one of many air-conditioned cooling centers located throughout the city to help New Yorkers beat the heat as temperatures soar on the first day of summer.

A kayaker make his way along the Mystic River as a sport watercraft approaches in Medford, Mass. on June 20. Temperatures reached 95 degrees in the greater Boston area along with high humidity on this summer solstice.

Steffanie Roberts gets kisses from her dogs Pink and Bear at her home on June 20, in Philadelphia. Temperatures climbed toward the high 90s along the Eastern Seaboard as an unusually early hot spell heralded the official start of summer.

Four-year-old Solaris Arias, of Providence, R.I. jumps through water spraying from an open fire hydrant in Providence on June 20. Much of the state remained under a heat advisory Tuesday afternoon because of the steamy air mass that has moved into the region resulting in temperatures in the 90s.

Manny Valdez, 16 from Arizona, leaps into a sprinkler in Central Park while Marley Henson, 16, also from Arizona, looks on in New York City, June 20, 2012. Valdez and Henson were part of a group of Rio Rico, Arizona students returning from an exchange program in Germany. New Yorkers tried to find ways to cope with the heat as temperatures soared on the first day of summer.

Water overflows from a storm sewer in Duluth, Minn. on June 20.

A car fell into a huge sinkhole in Duluth, Minn. on June 20. Duluth Mayor Don Ness said he would declare a state of emergency after a deluge of 9 inches of rain that he said caused extensive damage to the port city of about 86,000.

Water flows down a damaged street in Duluth, Minn. on June 20.

Residents of the Fond du Lac neighborhood and motorists stuck on Highway 23 who were evacuated wait in a DTA bus before being taken to the Copper Top Church.

Participants take part in a mass yoga class to mark the summer solstice on Times Square in New York, June 20. Yogis gathered on Times Square to celebrate the longest day of the year during the event which features four free mass yoga session at the heart of Manhattan.

Ten-month-old Leo Erichsen is held up by his mother, Tatjana Eres of Denmark, as she joins thousands of yoga enthusiasts for a class in New York's Times Square to mark the summer solstice, Wednesday, June 20. Temperatures are expected to be near 100 degrees (37C) Wednesday.

People practice yoga on the morning of the summer solstice in New York's Times Square June 20. The "Solstice in Times Square" event on Wednesday brought out hundreds of participants to celebrate the year's longest day.

People practice yoga on the morning of the summer solstice in New York's Times Square June 20.

An electricity pole is engulfed in flames in the forest of Katharonas in Nafplion, Greece, on June 20, 2012.

A firefighting plane tries to extinguish a forest fire in Nafplion on June 20, 2012.

LeBron James of the Miami Heat drives against Thabo Sefolosha of the Oklahoma City Thunder during Game Four of the 2012 NBA Finals on Tuesday night.

Catholic priest Fabio Colindres speaks with a member of Mara Salvatrucha gang during a mass at the prison of Ciudad Barrios, El Salvador on Tuesday, June 19, 2012.

A member of Mara Salvatrucha gang poses at the prison of Ciudad Barrios on Tuesday.

Mara Salvatrucha gang members attend a mass at the prison on Tuesday.