Forecasters are keeping an eye on Tropical Storm Lee, which they predict could soon become a full-blown hurricane in the Atlantic Ocean.
An astronomer in Slovakia captured the rare luminous phenomenon as it briefly flashed in Earth's upper atmosphere during a thunderstorm.
El Niño is set to collide with a megadrought in the Southwest. Will the pattern of wet, warmer weather in the Pacific help end the drought?
Gigantic jets, which are 50 times more powerful than typical lightning bolts and can reach the edge of space, were seen erupting out of Hurricane Franklin near Puerto Rico.
The storm intensified overnight and made landfall near Keaton Beach, Florida, on the morning of Aug. 30, supporting predictions that soaring sea temperatures would boost storms and hurricanes this year.
The Landsat 8 satellite captured the deadly flames that burned through the town of Lahaina in Hawaii and killed at least 99 people.
Photographers hoping to capture stunning "night-shining" clouds have been left frustrated this year. The fast-approaching solar maximum may be to blame.
Stunning first videos from a new space-borne instrument designed to improve the monitoring of thunderstorms show the crackle of lightning over Europe, Africa and the Atlantic Ocean.
The photographer combined individual images collected over a 50-minute period during an intense thunderstorm in Turkey.
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