...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM PDT SATURDAY...
Fri thru Sunday – moisture will continue to stream into the Sierra today and tonight, shifting southward through the day. Mono County will see conditions worsen during the day today, with peak snowfall rates most likely there between 10 am and 10 pm. System will end from north to south tonight, but with potential for some narrow bands of heavy snow to persist across Mono Saturday morning. Once the main storm clears, snow showers will hang around through Saturday afternoon.A warming and drying trend starts Sunday.
Monday onward… Greatest concern in the long-term period is a warmer and wet system with an atmospheric river tap. The moisture is headed toward southern California based on GEFS ensemble mean guidance, makes its way toward the Sierra Early Wednesday morning into Thursday. The region will be on the warm side of the jet, with snow levels likely to be around the 7000 ft. Upper elevations of the Sierra have the potential for another round of heavy snow. As an upper level trough swings into the west Thursday, it will push a cold front through the region, with falling snow levels. The final piece of the upper low moves overhead on Friday keeping chances for snow showers in the forecast Friday into Saturday.