Heat wave expected to affect central and eastern U.S. ahead of Independence Day
A prolonged heat wave will bring daytime highs in the 90s and 100s to many central and eastern cities, with heat indexes reaching up to 114 degrees, affecting about 111 million people.
A broad heat wave is set to impact large portions of the central and eastern United States in the days leading up to the Independence Day holiday. Federal and local weather agencies have placed roughly 111 million residents under heat alerts for the week.
Cities such as Chicago, Kansas City, St. Louis, Nashville, Savannah, Philadelphia and Boston are among those under warning, with forecasted daytime temperatures climbing into the 90s and 100s. When combined with humidity, the heat index is projected to reach between 105 and 114 degrees Fahrenheit.
The intensity is expected to rise through the week in the East. Philadelphia, Washington and New York may see heat index values exceed 100 degrees by mid-week, with Philadelphia potentially feeling as hot as 112 degrees on Thursday and New York approaching 108 degrees.
Authorities advise residents to stay hydrated, limit outdoor activity during peak heat hours and check on vulnerable individuals.
