Update:

Reports of around another foot being reported this afternoon at lake level. Heaviest snow is now over as the cold front has cleared the area and convective snow showers are in its wake. The cold low is making its way down the coast of CA and temps have dropped to 10 degrees at 8700 ft. and 20 degrees at lake level. Any snowshowers this afternoon and tonight will pile up quickly with 20-30:1 snow ratios. Expecting 3-6 more inches at lake level overnight and 6-12 above 7000 ft. As the low moves into Central CA tonight a band of snow should form on the Northern edge. This band is the one that could bring snow to very low elevations in Northern & Central CA as it works its way South overnight.

From This Morning:

That’s on the heals of the “November & December to Remember”, and the “January to Forget”, and we may be in store for a “Miracle March”. Resort Totals page is updated as of the 6 a.m. report from the resorts. 20-27 inches for the resorts on the West side in the past 24 hours, and 12-17 inches for resorts on the East side. Send in your 24 hour snow totals here. Reports of 10-20 inches at lake level this morning.

Temps have actually risen about 5 degrees in the early morning hours as some warm air gets drawn up ahead of the cold front that is currently around Redding. That has decreased snow ratios briefly from 20:1 at lake level to 15:1, and 25:1 above 7000 ft. to 20:1. As the cold front moves through today we will see the heaviest snow of the storm, and the temps will drop and snow ratios will increase again. Models show that a good amount of the precip is still to fall today with 1.25-1.5 inches of liquid even though we already have a foot at lake level and 2 feet on the mountains. Expect another 1-2 feet at lake level and 2-3 feet above 7000 ft. by Saturday morning.

Models are in pretty good agreement that we start to clear out and dry out Saturday morning with just some lingering snow showers. Temps will be cold with highs maybe not getting out of the single digits on the summits and the teens at lake level. Sunday and Monday we warm up pretty quickly back into the 20′s & 30′s with brief ridging and a Southerly flow ahead of the next big dump next week.

Another low will drop down the Pacific NW coast next week bringing the cold Northern branch of the jetstream with it. The ridge in the Central Pacific will retrograde North and West allowing the Southern branch of the jetstream to come across the Pacific and merge with the Northern branch over CA by Wednesday. This will be the setup for more heavy snow measured in feet Wednesday through Friday next week.

The La Nina is weakening as we go towards spring and that may be allowing the Southern branch of the jetstream to finally get some energy. The MJO is also forecasted to strengthen over the Western Pacific over the next 2 weeks. I know you may not believe me after it did nothing in January, but now the La Nina is weaker and won’t limit the convection as much. Teleconnections are ideal for storms to continue into the Second week of March and maybe beyond. More on that after this storm…..BA

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