Greater San Diego could get 1.5 inches of rain from ‘atmospheric river’
The storm could affect play at Farmers Insurance Open at Torrey Pines
Greater San Diego could get 1.5 inches of rain from an “atmospheric river” weather system that will flow ashore Thursday night and last through Friday, when it also will leave a few inches of snow on the county’s highest mountain peaks, says the National Weather Service.
Like the huge windstorm that hit the region Monday, the new system is dropping down from British Columbia. And it’s tapping into a huge plume of warm moisture from the subtropics, northeast of Hawaii, making the event stronger than it would otherwise be.
This atmospheric river drenched the Bay Area Tuesday night and was expected to do the same in central California before slumping into San Diego County on Thursday night and intensify early Friday. The rain is expected to last into the afternoon.
There’s a possibility that the storm could delay the start of competition Friday at the Farmers Insurance Open golf tournament at Torrey Pines. But it doesn’t appear that the system will shut down the county’s outdoor COVID-19 vaccination superstation near Petco Park.
Oceanside is likely to get 1.57 inches of precipitation while San Ysidro and Miramar receive 1.50 inches, the weather service says. Chula Vista will get 1.36 inches and San Diego International Airport will get 1.33 inches.
Forecasters also estimate that Fallbrook will get 1.71 inches while Rancho Bernardo and El Cajon gets about 1.57 inches.
The heavy snow that fell in the San Diego County mountains Sunday and Monday will help reduce the region’s wildfire risk, as will the robust rain that hit many inland valleys and foothills. So will the upcoming rains.
But San Diego is running way behind in seasonal rainfall. Since Oct. 1, the airport has recorded 1.75 inches of precipitation, which is about 3 inches below average. The next storm could cut the deficit nearly in half. And more relief may arrive early next week.
Forecast models indicate that another atmospheric river will form, and it could impact Southern California, according to UC San Diego’s Center for Western Weather and Water Extremes.
Sign up for the Pacific Insider newsletter
PACIFIC magazine delivers the latest restaurant and bar openings, festivals and top concerts, every Tuesday.
You may occasionally receive promotional content from the Pacific San Diego.