By Reginald Stanley. Posted March 12, 2025, 3:28 AM.

A cutoff low pressure system approached Southern California from the southwest on Tuesday, bringing scattered showers to the region.

Precipitation totals were mostly below predicted totals outside of San Diego County, while convection largely failed to materialize and anticipated thunderstorms did not form. The cutoff low stalled somewhat off of San Diego's coast, before eventually moving over land Tuesday evening and departing to the east. Immediate coastal areas, as well as much of San Diego County, were generally wetter than their inland and northern counterparts. In the WeatherCurrents network, both South Fallbrook and Temecula tied for wettest totals, with 0.52 inches each. Other communities in the Temecula Valley, as well as Anza to the east, received totals between 0.3 and 0.4 inches, while other locations further north were drier. A total of 0.19 inches was recorded in Riverside (Canyon Crest), courtesy of Jim Ness. Only 0.15 inches was observed in Simi Valley, while WeatherCurrents' station in Pinon Hills did not record any measurable rainfall.

Shower activity tapered off late Tuesday night, largely ending before midnight. Light rain is still possible Wednesday morning, prior to the arrival of a second, larger and wetter storm Thursday morning. Colder temperatures, lower snow levels (down to approximately 3,000 feet above sea level Thursday into Friday morning), and much wetter precipitation totals are expected from this second storm, before a third weaker disturbance impacts the region Friday into Saturday morning.

Here are the rain totals for the WeatherCurrents network and associates:

1. Season began October 1, 2024.