California needs all the rain it can get now, because it certainly isn't going to come in May. On average, May is one of the driest months on the West Coast. The normal May rainfall in San Francisco is less than a half inch, and in Los Angeles it is barely quarter inch.

The storm of concern is centered due west of Los Angeles, and its track is slightly north of east. That will bring the most substantial rainfall into California with very little expected to the north in Oregon. The main impact from the storm will come from later Tuesday into Wednesday morning. This is not the type of system that produces serious flooding and mudslides Did I mention thunder? There could be some of that too along with hail through the lower third of the state.

Story by Expert Senior Meteorologist John Kocet.