Scientists Predict Strong El Niño Will Bring Significant Coastal Flooding and Heavy Rainfall to California
California faces an increasing probability of a wet winter as El Niño conditions in the Pacific Ocean strengthen. Scientists at the National Oceanic and Atmospheric Administration report a greater than 90% chance of a strong El Niño being present by October, November, and December. There is a 75% probability that this event will rank as the strongest in history since modern records began in 1950. The phenomenon is driving a coastal Kelvin wave northward, which is expected to raise sea levels along the California coast by 6 to 12 inches in the coming months. This rise in water levels, combined with warmer expanding waters, will put coastal communities at a greater risk of flooding during winter storms. Meteorologists and climate scientists indicate that the state may experience above-average rainfall, particularly after December. While Southern California typically has higher odds of a wet winter during El Niño years, models show that all of California could see heavy rainfall. Emergency officials are already preparing for the potential impacts. The California Office of Emergency Services is holding planning sessions to identify resources and map areas of concern to find protect lives, homes, and coastlines.
Sources
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El Niño: Why chances are increasing for lots of rain this winter in the Bay Area and across California
The Mercury News
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Coastal damage and a looming El Niño prompt warnings for homeowners to review insurance coverage
ABC7 Los Angeles
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Sudden sea level rise — tied to El Niño — is about to hit the California coast
CNN