Locally heavy rainfall will be possible on Tuesday along the coastal areas of Southern California. Heavy snow is likely for the Sierra Nevada.
A powerful surface low will approach the coast of California on Tuesday. Enhanced southerly flow ahead of this low will allow for rich, Pacific moisture to surge into the region. Rain showers are expected to begin impacting southern California Monday afternoon, but the heaviest rainfall is expected on Tuesday. Widespread rainfall accumulations of 1-3 inches are expected across southern California with locally higher amounts in excess of 4 inches possible in some locations. In higher elevations above 6,000 feet, locally higher amounts in excess of 4 inches will be possible.
Above 6000 feet, heavy snow will be likely. Widespread accumulations of 6-8 inches can be expected with locally higher amounts in excess of 15 inches possible in some locations. The heaviest snowfall will be in the southern Sierra Nevada.