NOAA has issued a Winter Weather Advisory for California’s Sierra Nevada mountains on Sunday and Monday.

Lake Tahoe, Yosemite, and Mammoth are all forecast to se 6-12″ of snowfall above 7,000′.

Snow levels will start high around 9,000′ on Sunday before crashing down as low as 5,000′ on Monday.

Snow amounts Sunday night-Monday are projected to range from 6-12
inches above 7000 feet in the Sierra, but with the delay in
arrival of colder air, amounts down to lake level around Tahoe
look to be limited to 3 inches or less. Higher foothills in far
western NV and northeast CA (5500+ feet) could also receive an
inch or two of snow.
- NOAA Sacramento, CA today

video showing the timing of the storm and when it’ll start snowing in CA

It looks like CA ski resorts will experience a powder day on Monday with some leftovers on Tuesday hopefully.

Ski Resorts Open in California:

• Squaw Valley
• Boreal
• Kirkwood
• Hevaenly
• Mammoth 
• Mt. Rose, NV

Winter Weather Advisory for California:

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1153 AM PST Sat Nov 25 2017
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
1153 AM PST Sat Nov 25 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM SUNDAY TO 10 AM
PST MONDAY ABOVE 7000 FEET...

* WHAT...Wet snow and strong winds expected. Plan on difficult
  travel conditions and possible damage to trees and power lines.
  Total snow accumulations of 4 to 8 inches, with localized
  amounts up to 12 inches, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope
  Northern Sierra Nevada including Interstate 80 over Donner Pass,
  Highway 50 over Echo Summit and Highway 88 over Carson Pass.

* WHEN...4 PM Sunday to 10 AM Monday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times. Wind gusts over 50 mph possible.