Sunday morning forecast discussion

Plenty of clouds in the forecast for today with continued mild high temperatures, afternoon highs near 70°. Morning low temperatures were quite mild, especially for the Sierra. This morning's temperatures were more than 20 degrees higher then the same time yesterday morning.

You can thank a huge blanket of clouds for the lack of radiational cooling. The cloud deck is a wonderful insulator keeping all of the daytime heat from being released back into the atmosphere. Because of the mild start, expect afternoon highs in the same ballpark as Saturday, even though we'll have less sunshine during the day.

An approaching cold front later today will bring some notable changes to the forecast. Latest model runs are showing most of the precipitation north of the Sacramento area for the day. The chance of rainfall will become more likely moving into the Sacramento area overnight - early Monday morning.

This could make for a wet morning commute. Rainfall amounts expected in the valley up to .5 inches with slightly more rainfall for the foothills. A rain/snow mix will develop in the Sierra late Sunday with snow levels beginning at 7,000 feet falling between 5,500 - 6,000 feet during the day Monday .

Expect snowfall accumulation for the Sierra, two to six inches for ski areas and up to 10 inches for higher elevations. This cold front will also ramp up wind speeds for the Sierra with winds gusting up to 25 mph during the day for lake level. Higher elevations could see winds gusting as high as 55 mph with the passage of this cold front.

Thunderstorms will also be a possibility during the overnight into Monday morning. For the rest of the week, ample sunshine with daytime highs warming to the mid 70's for the valley. Sierra highs near 60° by the end of the work week.


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