More than 40 states will record highs in the 90s or higher this week as the massive heat wave baking the Plains expands its grip across the United States.
It is not unusual for temperatures this time of year to rise to or above 90 degrees in 23 of the 48 contiguous United States.
However, the magnitude of the heat wave is clearly evident with more than 40 states set to record a 90-degree temperature reading or greater on at least one day of this week. AccuWeather.com Meteorologist Bill Deger adds that several record highs are in jeopardy.
Monday is when the United States may see the greatest coverage of 90-degree temperatures as the dome of heat stretches from the Northwest's interior to the mid-Atlantic and southern New England.
The worst of the heat wave through at least Wednesday will focus on the nation's midsection.
The Plains will register triple-digit highs on a daily basis from Sunday to Wednesday. Temperatures will flirt with the century mark throughout the middle and upper Mississippi Valleys, which includes Minneapolis and St. Louis.
High humidity from the eastern Plains eastward will worsen the situation by causing AccuWeather.com RealFeel® temperatures to soar between 105 and 110 degrees.
RealFeels will even reach the 115-degree mark in some cases, such as in Omaha, Neb., and Kansas City, Mo.
Heat and humidity will also build Sunday into Monday across the Great Lakes and Northeast, setting the stage for severe thunderstorms.
However, the worst of the heat will likely come later in the week as the center of heat wave shifts eastward.
Chicago, New York City, Philadelphia and Washington, D.C., could approach 100 degrees with temperatures feeling dangerously hotter due to high humidity.
"Unfortunately, each year people lose their lives in severe heat waves such as this," states Deger.
Deger continued, "It is imperative that individuals engaging in outdoor activities stay well hydrated and take frequent breaks."
The Bardarbunga volcano erupted Friday in Iceland, according to the Icelandic Met Office.
It's been a tumultuous week on both the East and West coasts as two hurricanes induced rough surf and a high risk for rip currents.
After a brief cooldown late this week, very warm and humid air will bounce back during the Labor Day weekend.
A disturbance over the Gulf of Mexico will deliver rain to the coast of Texas on Friday before expanding over the lower Mississippi Valley this weekend.
A great white shark was spotted at Duxbury Beach in Massachusetts earlier this week, forcing the evacuation of the water.
While Marie will stay well offshore from Los Angeles, it will continue to produce dangerous surf along many Southern California beaches through Friday.
New England (1816)
"Year in which there was no summer", otherwise known to weather historians as "1800 and frozen to death" killing frost once again damages sparse corn corp in northern New England...loss of this and other crops led to severe famine in much of New England that winter...and helped spur western migration in spring of 1817.
New England (1965)
A total of 2.5 inches of snow on top of Mt. Washington set an August record. Vermont had a reading of only 25 degrees, while Nantucket had a chilly 39 degrees. Earliest freeze on record at many stations.
Houston, TX (1980)
2.23 inches of rain fell in less than 1 hour. Streets were flooded in the downtown district and a tornado touched down briefly west of Houston at Sealy, TX.