A new map shows when the Big Dipper Firefly is most active across the central and eastern U.S., while conservation biologist Richard Joyce explains how people can help protect firefly habitats.

AccuWeather's Geoff Cornish says the Northeast will be scorched by a hot spell to start the weekend before a strong cold front sweeps across the region bringing severe thunderstorms.

AccuWeather’s Geoff Cornish explains how wildfire risk moves across the West, peaking in the Southwest in spring, shifting north in summer, and returning to California in fall.

25 years ago, Tropical Storm Allison dropped feet of rain, flooding Houston area Between June 5 and 9, 2001, Tropical Storm Allison meandered over Texas and Louisiana, bringing 30 inches of rain to ...

Sunset after 9pm: Why the sun and clock don't align perfectly around the solstice The summer solstice is on June 21, but across the U.S., that date does not match when the earliest sunrises and latest ...

The major cities of Washington, D.C., Richmond, Virginia, and Charleston, West Virginia, are forecast to be in the severe weather threat zone on Sunday. Some locally heavy, gusty thunderstorms may ...

Tropical Storm Amanda has formed in the eastern Pacific Ocean, becoming the first named storm of the year within 1,500 miles of the Americas. An area of tropical interest and a tropical rainstorm near ...

A day after hail pummeled Colorado, storm risks are back throughout the middle of the country.

Heat waves do more than just generate high temperatures and cause excessive sweat. Research shows that heat affects animal brains, which impacts their ability to think and their behavior. According to ...

Even though only one tornado was reported in Illinois in May, the state maintains a strong lead amongst the rest of the U.S. for tornado reports so far this year, data from NOAA's Storm Prediction ...

2026 Atlantic hurricane season is here, but when will the 1st storm form? Tropical development is expected to remain limited as the Atlantic hurricane season gets underway, but forecasters say a shift ...