# Planetary wave hits San Francisco Bay

> A deep-sea wave from El Niño lifts San Francisco Bay waters by a foot, triggering record flooding.
- Title: Planetary wave hits San Francisco Bay · Sfgate | Shortify
- Summary: A deep-sea wave from El Niño lifts San Francisco Bay waters by a foot, triggering record flooding. El Niño's Kelvin wave raised San Francisco Bay water…
- Keywords: el niño, kelvin wave, san francisco bay, tide record, ocean currents, california flooding, news, local, Planetary, wave, hits, San
- Source: Sfgate — https://sfgate.com/bayarea/article/planetary-wave-sf-22477350.php
- Read time: 1 min
- Topics: el niño, kelvin wave, san francisco bay, tide record, ocean currents, california flooding, news, local
## El Niño wave arrives
El Niño sent a deep-sea wave from the tropics into California waters.
## Wave travels underwater
Unlike beach waves, this Kelvin wave lifted sea surface by up to a foot underwater.
## Wave reaches San Francisco
The wave arrived in San Francisco Bay recently, contributing to local flooding.
## Origin and path
It originated in the western equatorial Pacific in August and traveled to the U.S. West Coast.
## El Niño strength
This year's El Niño is very strong and may surpass all previous recorded events.
## Water level rise
San Francisco Bay water levels peaked at 1.5 feet above tide predictions last weekend.
## Record tide threat
This anomaly could set the highest tide record if king tides occur around Thanksgiving.
## Key takeaway

El Niño's Kelvin wave raised San Francisco Bay water levels by 1.5 feet above predictions, setting a new October tide record.