The atmosphere is becoming energized over the Pacific, which will allow for a few chances of rain in the next several days.
In the satellite loop below you can spot the flow streaming towards the West Coast off the Pacific. The flow is fairly flat (east to west) and not highly amplified (north to south). This allows fast-moving storms to approach the coastline.
There is also a tropical connection of moisture, or atmospheric river, which is shown in the second map. This will greatly enhance the rain potential in Central and Northern California, however, this river will weaken as it moves into Southern California.
The first round of rain will arrive Tuesday evening and persist into early Wednesday morning (90%).
A few showers could pop up Thursday and Friday, though the majority of the days look dry (30%).
Snow levels will remain high (9,000 to 10,000) through most of the week.
Rain, isolated thunderstorms, and downpours will be possible through the day Saturday as a potent storm races past the area (90%). Showers will diminish early Sunday morning (New Year's Day).
Snow levels will briefly drop to 5,000-6,000 feet Saturday evening and night, so some local mountains could see some snow. Keep a close eye on the forecast in the coming days because I'm sure there will be some adjustments.
I've posted the computer projected rainfall and snowfall through Sunday afternoon. Most of Southern California is going to get some much needed precipitation soon!
