A dangerous heat wave continues to scorch a large part of the United States, with more than 130 million people under extreme heat watches and warnings from South Dakota to Florida as temperatures in some cities are expected to exceed 100 degrees and heat indexes — or “feels like” temperatures — could soar past 115°F.

Extreme heat has again enveloped the tri-state area, prompting the National Weather Service to issue heat advisories through Wednesday.  This week is shaping up to deliver the second heat wave of the summer in New York City,

Extreme heat and humidity are expected to hammer the New York City area to start the week. We could see our second heat wave of the season, with three consecutive days above 90 degrees.CBS News New York's First Alert Weather team has issued a string of First Alert Weather Days due to the threat of intense heat.