It could rain up to 2.5 cm in the valleys and snow up to 1.5 m in the mountains when the storm hits the Southland from Thursday afternoon to Friday morning.
A storm plagued San Luis Obispo and Santa Barbara counties Thursday morning, causing frequent rains and heavy wind gusts in those areas, but was expected to move southward by afternoon.
The National Meteorological Service warned that recent fires – such as the Bobcat fire near Monrovia and the El Dorado fire near Yucaipa last September – are particularly vulnerable and can cause dangerous mudslides because the slopes burned by the fires are loose and unstable.
We have a big slope here, so it’s hard to say how fast and how hard it can happen if there’s a problem, David Hasenauer, a Monrovia owner, told CBSLA on Wednesday.
Los Angeles County Public Works staff installed a drainage pipe to divert floodwaters from Monrovia and also cleaned up the catchment areas.
Residents of Hughes Lake, where the fire broke out last September, have been warned to prepare for a possible evacuation.
Heavy rainfall in Los Angeles County is expected to spread to recent burns including Lake, Bobcat and Ranch 2 tonight as the storm moves south, the NWS said Thursday in a statement.
Street flooding, downed trees and power outages are possible. Los Angeles County residents have been notified that they can pick up free sandbags at several Los Angeles County fire stations.
The Orange County Sheriff’s Office declared an evacuation Thursday morning east of Irvine for residents in the Bond Fire area. The injunction applies to homes in Silverado Canyon, Williams Canyon and Modjeski Canyon.
Meanwhile, rain falling on the San Bernardino Mountains could melt the snow cover and cause mudslides, Captain Cal Richard Cordova told CBSLA on Wednesday.
The San Bernardino County Sheriff’s Department issued an evacuation order Thursday for the village of Mountain Home, Glen Oak and northeastern Yucaipa because of the fire that gouged the El Dorado River.
Enjoy a calm, cool and cloudy morning before the afternoon storm hits hard! Warnings were issued for winter storms, flooding, surf and high winds. Possible scattered rain in 5 and up to 3 feet of snow in the mountains! #cbsla pic.twitter.com/v3Fl2ZEotd
– Danielle Gersh (@DanielleGersh) 28. January 2021
A winter storm warning is in effect in the mountains as of 3 p.m. Thursday – 3:00 pm Friday. Above 6,000 feet, there can be between 1 and 3 feet of snow, which can fall to 4,500 feet.
The flood alert has been in effect for 16 hours. Thursday – 4 p.m. Friday in the Antelope, San Gabriel and Santa Clarita valleys. Los Angeles and Ventura counties will receive between 1.5 and 3.5 inches of rain, and up to 5 inches in the mountains.