Heading back to winter

Another spring storm will impact the Bay Area over the next 3 days.  This system will have 3 parts. Frist part (Mon):  Light to moderate rain expected.  The cold front, along with a band of heavy rain, moves in late afternoon-evening. Second part (Tue):  The cool, unstable part of the system moves in. Thunderstorms chances will be increasing. Third part (Wed):  Lingering showers expected.  The activity should be decreasing later in the day. Significant snow in the Sierra too!  A Winter Storm Watch has already been drafted.