Tropical Storm Lala to approach Hawaii with hurricane-force winds, flash flooding and rain; alerts expand across islands.

A stalled front and southern heat dome are trapping heavy rain over the Midwest, fueling severe flash flood risks.

August is usually hot in the South. But this blistering heat wave will have staying power for days from Texas to the Carolinas. Here's what you need to know.

Over 200 tornadoes have torn across Illinois this year. That's more than any other state has recorded in any year, except one. Here's how bizarre this is.

A potentially historic El Niño is already impacting the weather. Here's the likelihood of a historic El Niño.