It's welcome news for the state, which has just endured its driest year in recorded history.
While the rain won't be enough to end the drought, the National Weather Service projects that by Saturday, twin Pacific storms may bring as much as two inches of rain to the coast and several feet of snow to the Sierra.
The first storm is expected on Wednesday and will offer light rains.
But the storm on Friday is expected to drench the entire state for 24 hours.
New regulations that include fines up to $500 a day for residents who waste water are taking effect in California.
Continued drought brings drawdown of groundwater in California, other western states.
High school football concussions, tax relief on home loan modifications, and homeowners association watering requirements – all subjects of bills signed Monday by California Gov. Jerry Brown.
California has approved tough new water restrictions, but how they’ll be enforced depends on where you live.
Many people living in small Central Valley communities in California are watching their wells run dry. US Agriculture Secretary Tom Vilsack announced more federal aid to help those hurt by the drought.