1 hr ago

Strengthening El Niño Threatens California With Flooding and Erosion

El Niño is a weather pattern that warms parts of the Pacific Ocean.

It can make storms and strong winds more powerful.

California has already seen beaches shrink and some coastal homes damaged.

Scientists say underwater Kelvin waves could raise sea levels near the coast.

Higher seas could make flooding worse when large storms arrive.

Experts estimate that floods and mudslides could cause billions of dollars in damage this winter.

Areas near old wildfire burn scars may be especially likely to experience mudslides and flash floods.

California officials are inspecting roads, bridges, levees, and other vulnerable structures.

Some communities are also teaching residents how to prepare for dangerous storms.

Key facts

Estimated statewide losses: Climate X estimates $2 billion to $3 billion in flood and mudslide losses through winter.
Typical annual flood damage: California averages about $500 million in flood damages annually, according to Climate Central.
Kelvin wave sea-level increase: Recent Kelvin waves have raised sea levels by up to 16 inches, or 40 centimeters, across the Pacific.
Recent coastal damage: Storm remnants in early September severely damaged more than a dozen oceanfront homes in Orange County; at least one was marked for demolition.
Emergency declaration: Governor Gavin Newsom declared a statewide emergency on September 22.
Expected next wave: A significant Kelvin wave is expected to reach California by early October.
Highest-risk areas: Coasts, wildfire burn scars, slopes, vulnerable canyons, roads, bridges, levees, and channels face elevated risks.

NDTV · 1 hr ago