California storm updates: 'This storm continues … take precautions,' mayor warns

"This storm continues -- and that means we still need Angelenos to take precautions," Los Angeles Mayor Karen Bass warned Tuesday.

Periods of rain will continue Tuesday creating dangerous conditions on the roads and increasing the chance of mudslides and flooding, Los Angeles Fire Department Chief Kristin Crowley said.

No fatalities have been reported in LA, Bass said.

Crews have responded to 307 mudslides and 257 fallen trees, Crowley said.

If you must go outside, use caution, Crowley warned. Slow down if driving and always be on the lookout for downed power lines and trees, she said.

The mayor commended residents who have checked on each other in hard-hit communities and stressed that everyone should check on their neighbors.

The "historic" rain is expected to taper off late Tuesday night, National Weather Service meteorologist Ariel Cohen said.

There’s a chance for more atmospheric rivers this spring, Cohen said.

Downtown Los Angeles recorded 7.03 inches of rain on Sunday and Monday, marking the wettest two days in the city since 1956.

Los Angeles averages 14.25 inches of rain for an entire year. So far this year, LA has recorded nearly 11 inches of rain, or 75% of the city's annual rainfall.

And the rain is still falling. As of Tuesday morning, the three-day rainfall totals have climbed to: 12.2 inches in San Bernardino County; 12 inches in Bel Air in Los Angeles County; 9.4 inches in Santa Barbara County; 8.7 inches in Ventura County and 7.6 inches in downtown Los Angeles.

As of early Tuesday, almost a foot of rain had fallen in Los Angeles' Bel Air neighborhood over a period of less than three days, according to the National Weather Service

As of Monday, downtown Los Angeles had recorded 7.03 inches of rain in two days, making it the city's wettest two-day period since 1956 when 7.44 inches of rain fell. It's also the third wettest two days in Los Angeles' history, with records dating back to 1877.

Los Angeles typically gets 14.25 inches of rain over an entire year. Since the start of 2024, the sprawling Southern California city has recorded almost 11 inches of rain -- 75% of its annual average.

-ABC News' Max Golembo and Sam Wnek

A storm system continues to slam Southern California, with an atmospheric river bringing a plume of moisture all the way from the tropical Pacific Ocean.

The National Weather Service has flood watches in effect Tuesday morning for California as well as Nevada and Arizona. Winter storm warnings and snow alerts were also in effect for nine western states, from Montana to California, as this storm spreads into the Rocky Mountains.

As of early Tuesday, up to 3 feet of snow had already fallen on the Sierra Nevada mountain range.

The threat of flash floods on Tuesday will be mostly from Los Angeles to San Diego in California and from Yuma to Phoenix in Arizona. Locally, less than 1 inch of rain is in the forecast for Los Angeles, but the foothills around the city could get an additional 1 to 2 inches of rain.

On Wednesday, another storm system -- much weaker -- is expected to move through California from the San Francisco Bay Area to Los Angeles by the evening hours. The storm could dump an additional 1 inch of rain on southern California.

-ABC News' Max Golembo