NOAA is forecasting 3-7″ of snow for Mammoth ski resort in California on Thursday and Friday. Snow levels are forecast to be around 8,000-9,000 feet. The base of Mammoth is at 9,000-feet right now, so it should be all snow.
The system is moving in slightly slower so snow levels look to remain above 8-9000 feet at least through the short term. - NOAA Hanford, CA today
Large amounts of precipitation are forecast for the Sierra Nevada, CA this week: 4.2″ of liquid precipitation forecast north of Tahoe in the next 7 days, 3.1″ for Mammoth.
NOAA is also talking about more snow Friday-Monday.
.LONG TERM...Friday through Monday... Expansive upper low will be centered over southern CA to begin period, and move only slowly eastward through the weekend. This will keep the cool and unsettled weather pattern going with numerous showers and isolated-scattered thunderstorms. Being on the north-northwest side of upper low, heavier and more persistent bands of precipitation are likely to occur although confidence in exact location/timing remains low-medium. Deterministic runs of the GFS/ECMWF show two distinct periods where such heavier bands could develop, late Friday into Saturday morning and again by Saturday night/Sunday morning. However, these smaller scale features are difficult to pinpoint so far out. Precipitation totals overall continue to look impressive and some rises on streams and creeks can be expected. Snow levels have trended a bit higher from previous model runs but should still generally be 7000-8000 feet Fri-Sat before rising Sunday. So snow impacts should remain confined to the highest passes during this event. - NOAA Hanford, CA today