The heat wave is here.
Temperatures across the eastern and central PARTS OF THE U.S. SOARED ON SATURDAY... AS officials warned residents to stay indoors.
(SOUNDBITE) (English) BILL DE BLASIO, NEW YORK MAYOR, SAYING: "Everyone's gotta take it seriously.
This is a potentially dangerous weather situation." The National Weather Service said temperatures are due to reach the mid- to upper 90s.
But with the humidity, the heat indices will hit as high as 115 degrees in some areas.
The heat wave is sprawling from Kansas to the Atlantic Coast and from South Carolina to Maine, with some 124 million people affected.
In Baltimore, Maryland, authorities reported more than 2,400 outages, including at a senior center.
(SOUNDBITE) (English) UNIDENTIFIED RESIDENT, SAYING: "This is a deadly situation." In New York City, the MTA suspended subway service on multiple lines during Friday rush hour due to a system malfunction, leaving commuters sweltering and frustrated.
(SOUNDBITE) (English) ERNADINE MARCHAN, COMMUTER, SAYING: "Oh my god with the heat and the messed up trains it's too much too much.
Because there's no air." (SOUNDBITE) (English) UNIDENTIFIED COMMUTER, SAYING: "Hot and aggravated it makes no sense at all.
I'm just trying to get home that's it." Forecasters say the heat wave is expected to continue through Sunday with little overnight relief.