Hurricanes and typhoons — or more broadly, tropical cyclones — begin as clusters of thunderstorms over tropical ocean waters, taking anywhere from several hours to days to become organized.
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California is having a record-breaking year of flames, as dozens of wildfires have set the state ablaze.
After the Bighorn Fire burned a large area near Pima County, Arizona, a river of dark sludge rushed toward town.
A destructive tornado hit northern Dallas on Sunday, Oct. 20, causing widespread power outages and significant property damage.
The Saffir-Simpson hurricane only goes up to Category 5. But in theory, winds from a powerful hurricane could blow the scale out of the water, scientists say.
What causes the sun's 11-year cycle of sunspot activity? According to two new studies, it could be literal tsunamis of plasma.
New Orleans is bracing for a tropical storm that is expected to hit tonight or tomorrow, bringing with it chances of intense flooding.
A mud-volcano island that burst from the waters off the coast of Pakistan during a deadly earthquake in 2013 has disappeared beneath the waves.
One critical factor turned the heavy rainfall in Virginia and Washington D.C. into a flash flood emergency.
This time, a magnitude-7.1 temblor struck the region near Ridgecrest, California. Experts say the next one could be even bigger.
Southern California was rattled by a magnitude 6.4 quake on Thursday (July 4). Bigger quakes could be coming soon.
A destructive tornado moved through the outskirts of Kansas City on Tuesday, injuring at least a dozen people and killing one.
Recent rumblings at Yellowstone National Park are actually aftershocks of a quake that occurred 60 years ago.
Oklahoma, northwest Texas and the Texas panhandle are bracing for a day of extreme weather, including dangerous tornadoes, flooding and thunderstorms.
A massive, underground "blob" might be triggering hundreds of earthquakes in the Hindu Kush mountains.
Falsified data suggested that an earthquake was terminated by one of the most active volcanoes in Japan.