A Pacific Storm moved into the Southland today, bringing light rain and the possibility of thunderstorms and snow at unseasonably low levels.
The storm generated showers in Santa Barbara and Ventura counties early today, then, before dawn, brought light rain to parts of Los Angeles County, according to the National Weather Service.
"In most areas, we're looking at less than a quarter-inch of rain," said National Weather Service Meteorologist Dave Bruno. "There's still a chance of thunderstorms. We see that activity in the system over the ocean," where the main part of the storm remained early this morning.
Saying that the heaviest precipitation generated by the storm was staying offshore this morning, the NWS canceled winter weather advisories that had been issued for Southland mountains.
"While snow is expected to fall in the mountains above 3,000 feet through mid or late morning, snowfall totals are expected to average 1-3 inches, with isolated totals of 4 inches," according to an NWS advisory. "These accumulations are well below advisory thresholds."
But the NWS said snow would still affect traffic on parts of the Golden State (5) Freeway in the area of The Grapevine, the Antelope Valley (14) Freeway and Highway 33.
Below mountainsides burned by the Station Fire, the incoming storm may cause "possible minor to moderate mudflow deposition" on Manistee Drive, Derwood Drive, Bristow Drive and Earnslow Drive in the Paradise Valley area of La Canada Flintridge, the Los Angeles County Department of Public Works stated in a Debris and Mudflow Potential Forecast issued Wednesday afternoon.
Along the coast, a "high rip current risk" and "unusually high surf" are expected to last through Friday, according to the National Weather Service.
Gusty winds are also in the forecast, with the strongest expected Thursday afternoon.
Freezing temperatures are possible in the Antelope Valley tonight and early Friday morning, according to an NWS advisory.
Below the 250-square-mile Station Fire, 30 key debris basins that form a line of defense between burned mountains slopes and thousands of homes below were said to be ready.
According to a Los Angeles County Department of Public Works schedule updated Wednesday, 27 basins were at or near 100 percent cleaned out.
Three of the largest key basins had been excavated to restore 65 to 75 percent of their capacity, according to the department.
Smaller basins, which between November and February were considered most at risk of being overwhelmed, were totally cleared out earlier this month, the department reported. That includes Mullally Basin, near the high end of Ocean View Boulevard in the Paradise Valley neighborhood of La Canada Flintridge.