By Reginald Stanley. Posted April 21, 2021, 1:03 PM.

A deep marine layer and low pressure is bringing patchy drizzle and light rain to the region Wednesday through Thursday morning, following a warm Santa Ana Wind event earlier in the week.

While no measurable precipitation has been observed at any of the active WeatherCurrents stations as of mid-day Wednesday, sprinkles and patchy drizzle have fallen in parts of the Temecula Valley and nearby foothills. A 30 percent chance of precipitation remains through Southern California west of the mountains through Thursday morning, before a weak ridge forms over the weekend, while temperatures are expected to remain cool. An additional, potentially stronger Pacific storm with widespread rainfall and mountain snow is possible early next week. The intensity of the storm remains uncertain at this time, as computer forecast models have varied between the storm track and associated moisture in recent runs. The latest iteration of computer forecast models have indicated much wetter conditions with potentially heavy rainfall and mountain snow, and if it materializes, it would be one of the few significant storms of the entire 2020-2021 rainy season in Southern California.