A relentless atmospheric river is drenching the Bay Area, with heavy rain expected to continue for several hours on Thursday. Flood advisories remain in effect, and the risk of flash flooding in urban areas continues through Thursday morning,

A powerful storm brought heavy rain to the Bay Area overnight, but that was just the first round of precipitation from the system. More rain, including showers and thunderstorms, is expected Thursday afternoon as the storm enters its second phase.

An updated flood watch was issued by the National Weather Service on Friday at 11:52 a.m. in effect until 10 p.m. for Yosemite Valley. According to the NWS Hanford CA, “Flooding caused by excessive rainfall continues to be possible.

Delta is included in an updated flood watch issued by the National Weather Service on Friday at 1:34 a.m. The watch is in effect until 10 p.m.

Los Angeles County was placed under an updated flash flood warning by the National Weather Service on Thursday at 5:30 p.m. The warning is in effect until 8 p.m. “At 5:30 p.m., local law enforcement reported dangerous debris flows in Altadena as a result of extremely heavy rainfall that is moving over the area.