Forecasters warned Monday that a powerful storm system is approaching San Diego County that could trigger flooding and debris flows, particularly in recent burn areas.
The National Weather Service said there is a slight chance of drizzle on Tuesday, particularly along the San Diego County coast, valleys and coastal slopes.
High temperatures Tuesday are expected to reach 64 along the coast, 59 to 62 in the western valleys, 51 to 56 near the foothills, 43 to 53 in the mountains and 65 to 70 in the deserts.
As onshore flow strengthens, gusty westerly winds are anticipated to develop late Tuesday into Wednesday across the desert mountain slopes and into the deserts, forecasters said.
Midweek will bring widespread rainfall, fueled by two weak atmospheric rivers. The storm system is expected to begin Wednesday and last through Friday, bringing periods of heavy rain. Snowfall will be limited to the highest mountain elevations above 6,500 feet, according to the weather agency.
By the weekend, conditions will shift as drier and warmer weather returns, offering a break from the wet midweek pattern.
