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, ...

Australia has always had heat waves. But this week's heat wave in southeastern Australia is something else. Temperatures in some inland towns in South Australia, New South Wales and Victoria were up ...

The jet stream, or any wind, is the result of differences in surface temperature. In simple terms, warm air rises, creating low pressure, and cold air sinks, creating high pressure. Wind is the ...

Australia has always had heatwaves. But this week’s heatwave in southeastern Australia is something else. Temperatures in some inland towns in South Australia, New South Wales and Victoria were up to ...

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 ...

Millions of people in southeastern Australia are sweating through a record-breaking heat wave. The heat this week is likely ...

Marine heat waves have become longer and more frequent along the U.S. West Coast, as elsewhere in the world. But heating doesn’t always lead fish to change their location. A new study suggests a ...