The rain-weary Southland could still get more precipitation as unsettled weather continues to circulate over the region, but forecasters said the area is due for a brief respite on Wednesday before another storm system arrives later in the week.
The upper low-pressure system lingering over the region is expected to create “little pop-up showers and possibly isolated storms,” according to the National Weather Service.
“This is a favorable setup for waterspouts so boaters need to be prepared for dangerous conditions,” according to an NWS statement. “A shower or storm could literally develop anywhere at anytime and drop a brief period of heavy rain and possibly some small hail as well, especially in the foothills and mountains. The snow level will be between 5,000 and 6,000 feet and a few inches of snow accumulation are possible. At the very least it will be a very cool day with highs in the high 50s or low 60s.”
Rain again doused much of the Southland Monday afternoon and evening, following an already wet two days that dampened most of the weekend.
According to the NWS, the 24-hour period that ended at 9 p.m. Monday saw roughly 1.5 inches of rain fall in Porter Ranch, Northridge and La Canada Flintridge, while some mountain areas got about 2 inches. About three-quarters of an inch fell in downtown Los Angeles, but more than an inch fell in Bel Air and Beverly Hills.
Forecasters said conditions should be mostly clear on Wednesday, providing a brief break from the rain, but another system is expected to arrive Thursday or Thursday night.
“There remains a range of outcomes in terms of rain amounts, intensities, and impacts,” according to the NWS. “While this storm will not be nearly as wet as the storm we had this weekend, as mentioned before, it will take less rain than usual to get significant runoff and impacts.”
The NWS indicated that a half-inch to an inch of rain could fall in most areas between Thursday and Friday, with 1 to 2 inches possible in the mountains and foothills.
“There are still about 30% of the projections that favor double those amounts, which includes some of the AI models that have shown some skill with the recent storms,” forecasters said. “The vast majority of our projections show a big change in the weather starting this weekend, with drier and warmer conditions through the Thanksgiving holiday week.”
Tuesday’s high temperatures are forecast by the weather service to be around 60 from the beaches to downtown Los Angeles and the San Fernando Valley, the mid-50s to around 60 in the San Gabriel Valley, the mid-50s in the Santa Clarita Valley and the mid-40s to lower-50s in the Antelope Valley.
Monday’s rain caused a landslide in the Santa Clarita Valley, mudslides in Malibu and multiple reports of flooding on the Golden State (5) Freeway, near the Antelope Valley (14) Freeway and northward, the weather service reported.
More rain may still hit the Southland as unstable weather persists, though Wednesday should offer a brief break. With more storms expected later in the week and already saturated ground, even lighter rainfall could still cause flooding or runoff issues. Boaters and mountain travelers should stay alert as conditions may turn dangerous quickly.
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