'Atmospheric River' To Dump Rain On Burlingame, Hillsborough

SAN FRANCISCO BAY AREA, CA — Weather forecasters are warning of an upcoming storm headed for the Bay Area which is expected to dump rain across the region beginning Wednesday. The storm system will include the winter's first "atmospheric river," which is a plume of deep moisture pointed at the region, according to the National Weather Service.

"Look for mostly dry conditions today before a storm system brings widespread rainfall and breezy to locally gusty winds during the day Wednesday to the North Bay and through the remainder of the region Wednesday night," the NWS said on Tuesday. "After another period of dry conditions, a third system is possible late in the upcoming weekend."

The storm could dump between 3 to 5 inches of rain in the coastal areas, and 1 to 2 inches inland, according to the NWS. Potentially hazardous winds are also forecast, with gusts up to 50 mph, prompting officials to issue a wind advisory for the region.

"As the front approaches southerly winds will pick up with higher elevation areas likely to see gusts over 40 mph at time," the NWS said. "Favored spots in the North and East Bay hills will likely see gusts over 50 mph."

As for Burlingame in particular, here's what you can expect in the coming days:

Tuesday
Sunny, with a high near 63. Light north northwest wind becoming north 5 to 9 mph in the morning.

Tuesday Night
A 10 percent chance of rain after 4am. Increasing clouds, with a low around 46. West northwest wind 6 to 11 mph becoming light southwest after midnight.

Wednesday
A 40 percent chance of rain, mainly after 10am. Cloudy, with a high near 64. South wind 5 to 14 mph, with gusts as high as 18 mph. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Night
Rain. Low around 50. Breezy, with a south southwest wind around 26 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.

Thursday
Showers, mainly before 10am. High near 61. Southwest wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night
Partly cloudy, with a low around 45.

Come Friday, drier weather is expected to return before another system returns as early as Sunday morning.

IMAGE 1: Widespread precipitation to the entire region is expected Wednesday into Thursday as a weak atmospheric river interacts with another frontal system as it pushes through / CREDIT: NWS

IMAGE 2: Breezy conditions can be expected at higher elevation locations for Wednesday and Wednesday night as a cold font approaches our region. / CREDIT: NWS