Heat wave and high humidity will blast much of the eastern U.S. this week, meteorologists say
Summary
A strong heat wave will affect much of the central and eastern United States this week, bringing very high temperatures and humidity. The heat could cause health risks for many people and worsen wildfire conditions in the West.Key Facts
- Temperatures above 100°F (38°C) are already common in parts of the Southwest, like Phoenix and central Texas.
- More than 130 million people in southern and Great Plains states face moderate to severe heat risk.
- Several areas, including the lower Great Lakes, mid-Atlantic, and Mississippi and Ohio River valleys, will see highs over 100°F.
- Major cities such as New York, Philadelphia, Washington, Chicago, and Dallas will experience some of their hottest days this year.
- High humidity will make it feel like 100 to 115°F in many places, increasing health risks.
- Nighttime temperatures will remain warm, often in the 70s or even 80s Fahrenheit, making cooling off difficult.
- The heat is caused by a strong high-pressure system, called a "heat dome," that blocks rain and traps hot air.
- Dry and windy weather could increase wildfire dangers in the Western U.S.
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