Another week of intense heat is predicted to heighten health risks. The National Weather Service forecasts over 90 temperature records being tied or broken in the U.S. from heat persisting through Wednesday. Notably, many of these will be overnight heat records. Overnight temperatures that don’t cool significantly are more hazardous than high daytime temperatures. This summer has already begun with soaring heat across much of the U.S., influenced by a persistent heat dome expected to cover much of the country.
The intense heat over recent weeks has resulted in heat-related fatalities in New Jersey and fueled wildfires in the West.
Nighttime Heat Offers Little Respite
Nighttime temperatures are not expected to drop below 80°F (27°C) in Fort Lauderdale, Miami, Tampa, Galveston, and Charleston, according to the National Weather Service. Areas in the Midwest and Northeast, known for cold winters, will experience nighttime temperatures above 70°F (21°C), including Fargo, International Falls, and Portland.
Health Risks of High Night Temperatures
Health experts warn that high temperatures at night pose serious dangers because the body cannot cool down and recover. University of Georgia meteorology professor Marshall Shepherd stated, “That’s where the health outcomes are amplified, particularly for the elderly and vulnerable communities.” Even slight increases in body temperature can lead to heatstroke or excessive cardiovascular strain.
Risks Often Reveal Themselves in Subsequent Days
Kristie Ebi, a public health and climate scientist at the University of Washington, explained, “Mortality starts the second or third day” due to the inability of the body to cool. Early signs of trouble include heavy sweating, muscle cramps, and headache. Ebi emphasized the need for proactive measures to cope with heat.
It’s vital to find ways to cool down, such as using air conditioning or placing a cold towel around your neck.
Checking on friends and family, especially those who are older, pregnant, or have health problems, is crucial.
Staying Cool Without Air Conditioning
If air conditioning is unavailable, consider these alternatives for relief:
- Visit a library or mall.
- Use a fan and spritz water on your skin.
- Submerge your feet in cold water.
- Dampen your clothes with water.
- Stay hydrated by drinking plenty of water.
Associated Press reporter Seth Borenstein contributed to this report.
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