New data shows that a La Niña weather pattern is likely to develop in a few weeks, potentially impacting the Bay Area and California just at the start of the rainy season.
The National Weather Service says there is now a 71% chance of a La Niña weather event in the Pacific Ocean starting in October.
A La Niña weather pattern occurs when there are colder-than-average surface temperatures in central and eastern regions of the Pacific Ocean. It can have major effects on weather patterns across the globe and significantly impact rain trends along the entire West Coast…