Heat waves can form when a high-pressure system moves into a region and stalls. The system can force warm air downward, acting like a cap as it keeps the cool air near the surface from rising, ...

During the hot, humid summer months, meteorologists often discuss the heat index instead of the actual air temperature. But how is the heat index calculated, and why is it more important than the air ...

More than 600 people die each year from heat-related complications in the United States, according to the Centers for Disease Control. These deaths are preventable -- follow these tips from ...

Extreme heat can become lethal quickly. A young man cools off at Washington, D.C.'s Yards Park during a heat wave in 2021. Olivier Douliery/AFP via Getty Images For many people, summer is a time for ...

It might feel unseasonably hot where you are right now. That's thanks in part to a heat wave in the Pacific Ocean.

We may not notice it, but marine creatures off the Bay Area coast are already feeling the heat. Ocean temperatures in the ...

New research shows that marine heat waves can reshape ocean food webs, which in turn can slow the transport of carbon to the deep sea and hamper the ocean's ability to buffer against climate change.

Florida faces a potentially heightened risk of intense hurricanes in the coming season due to a marine heat wave. A "marine heat wave" is defined as a prolonged period of abnormally high temperatures ...

A record 2023 heat wave all but eradicated two species of coral that historically served as the backbone of Florida's reefs, ...