NBC News Weather
Updated: 1 hour 59 min ago
More than a dozen tornadoes swept across the South Wednesday, and the severe weather is expected to continue on Thursday.
The evening sky was illuminated with brilliant lightning as severe storms worked their way across Hannibal and Emden, Missouri.
Huge thunderstorms rattled northern Texas and warning sirens sounded over Tulsa, Oklahoma, in a night of intense storms.
A spring storm system was forecast to expand into the Mississippi Valley and South on Wednesday.
The most dangerous of the weather is aimed at a 70,000-square-mile stretch from southern Oklahoma to southern Nebraska.
Heavy rain triggered flash flooding in parts of Michigan on Monday, and now a new severe weather threat is confronting tens of millions of Americans.
Baseball-sized hail pounded parts of Kansas and at least 7 tornadoes were reported in a 24-hour period.
A low pressure system moving through the Los Angeles area brought rain, hail, high winds and even mountain snow Monday.
Homeowners hit by severe flooding in and around Houston last week are still early in the process of cleaning up and making repairs.
It's going to be a bumpy week.
Researchers say that climate change may have been a factor in the boom-and-bust cycles of ancient Southwest civilizations in the United States.
This is just the beginning: more dangerous rain, wind and possible twisters are expected across the region and beyond through Friday.
A new study looking at the effects of climate change predicts an extra week of dangerous ozone levels every year across the U.S. by the year 2050.
Three dust devils tore through an elementary-school sports event in China, lifting one student into the air and dropping him on the ground.
On Wednesday morning Houston is bracing for even more rain as the city deals with unprecedented flooding.
A crew member thrown from a tugboat in a Houston river was found dead Tuesday after heavy rains sparked flash flooding in the area, authorities said.
A state of emergency is in effect in Houston as the city deals with massive flooding from torrential rain.
More than 1,000 homes have been flooded and 100,000 people were left without power after more than a foot of rain fell in the Houston metro area.
A relentless drought related to El Nino has affected Somaliland and other parts of the Horn of Africa.
More than a foot of rain deluged parts of Houston on Monday, leaving five dead as surging waters flooded homes and highways for thousands of residents who were warned to stay inside.