A Pacific storm that will begin to spread across San Diego County late Saturday could produce enough rain and snow through Tuesday to significantly lower the threat of wildfires across the region, the National Weather Service indicated in an advisory.

Forecasters don’t expect the kind of rainfall that led to some of the region’s most destructive recent land flows. The Santa Barbara County community of Montecito was virtually destroyed after a winter storm immediately followed the Thomas Fire, a blaze that killed 23 people.