"Based on video, photos, firsthand accounts, and radar signatures a tornado occurred [roughly] 1:40 PM," the Bay Area ...

A warning covering an area with about 2,200 residents told people to take shelter because flying debris was expected.

From incredibly rare displays like the Northern Lights in San Diego to stunning sights of snowcapped mountains, here are some ...

The U.S. recorded the most tornadoes in at least a decade this year. Researchers are trying to figure out why.

At least two people have died as severe storms and tornadoes tore through parts of Texas and Mississippi on Saturday, ...

LOS ANGELES (AP) — Record-setting flooding over three days dumped more than a foot of rain on parts of northern California, a fire left thousands under evacuation orders and warnings in Los Angeles ...

On Saturday, as a powerful winter storm headed toward the Bay Area, San Francisco residents received a tornado warning from the National Weather Service. But no tornado touched down. Yet 50 miles ...

The warning ended at 6:15 a.m. as the storms moved northward into the San Francisco Bay, and damage in the tornado-warned area in San Francisco was ultimately determined by the NWS to be straight ...

(CNN) — For the first time in recorded history, downtown San Francisco was included in a tornado warning on Saturday as severe storms swept through the city, just one week after a tsunami ...