Wed thru Thursday - As ridge axis shifts east to today, thicker cloud cover will spread across CA-NV. Temperatures will trend warmer with highs in the 30’s and mid 40s. From tonight through Thursday, an upper level low pressure approaches the coast near the US-Canada border by Thursday, bringing mainly increasing clouds and southerly winds. Gusts could reach near 75 mph for the Sierra.
Fri - A couple more weak disturbances will spread more cloud cover over the region through Friday night, with light rain and higher elevation snow showers possible. There are timing and track variances with these disturbances (slightly more favorable potential Friday afternoon-evening), but associated precip amounts are expected to be light. Temperatures remaining above average (although a few degrees cooler than Thursday) snow levels 6500-7000 feet in the Sierra. Moderate southwest breezes are expected Friday.
Sat and Beyond - Models continue to show a split and weakening further for the late Saturday into Saturday night wave with a break before the main trough moves inland beginning late Tuesday. Saturday into Saturday night, the initial splitting system moves in with quite a bit of subtropical moisture, the forcing is weak. Snow levels look to be around 7000 feet, precip will be light, up to 1/4" of liquid and maybe 2" of snow in the mountains. Then ridging develops as the low in the East Pacific deepens before it moves in. Temperatures look a lot warmer now with 700 mb temps rising above the freezing mark and less cloud cover. Highs in 50s Sierra valleys. Then the trough slowly moves onshore late Tuesday into Wednesday.