A tornado ripped through Scotts Valley, California, injuring four and causing widespread damage. The twister, packing winds up to 144 km/h, left thousands without power. Severe weather also impacted ...

For the first time in recorded history, downtown San Francisco was included in a tornado warning as severe storms swept through the city.

A Level 3 storm has spawned a rare Tornado Warning in San Francisco and left behind a path of destruction across the Bay Area.

A late-night 5.2-magnitude earthquake shook the Pacific Ocean off the Northern California coastline, the U.S. Geological ...

Around one million people woke up to a terrifying alert urging them to 'take shelter' early on Saturday as a powerful storm ...

For the first time in recorded history, downtown San Francisco was issued a tornado warning on Saturday as severe storm ...

Without question, the 7.0 magnitude earthquake offshore off Cape Mendocino on Dec. 5 was large and potentially destructive. For some perspective, over the last 100 years there have been seven ...

(CNN) — For the first time in recorded history, downtown San Francisco was included in a tornado warning on Saturday as ...

Last week's earthquake off the coast of Humboldt County triggered a tsunami warning urging people across a huge swath of California and Oregon to evacuate. Why aren't tsunami warnings more precise?

Last week's earthquake off the coast of Humboldt County triggered a tsunami warning urging people across a huge swath of California and Oregon to evacuate. Why aren't tsunami warnings more precise?

The Pacific West Coast has the highest risk levels of tsunamis in the United States. Here’s where they have stuck in Northern ...