Chain controls going up on Sierra roads; changing weather all week

12:00 p.m. update: US 50 is currently free of controls.

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The first of several Spring storms is passing over Lake Tahoe today, and with it snow is starting to fall and chain controls are going up on Sierra roads.

Currently chains or 4WD with snow tires are required over US50 from Meyers to Twin Bridges. SR88 requires chains or 4WD with snow tires from three miles east of Ham's Station to five miles west of Pickett's Junction. SR89 requires chains or 4WD with snow tires from Pickett's Junction to Christmas Valley.

I80 is currently only screening for trucks at Applegate and the state line.

There are no controls currently up on the Nevada side.

The forecast today is:

Today - Rain showers before 11am, then rain and snow showers. Some thunder is also possible. High near 46. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tonight - A chance of rain and snow showers, mainly before 11pm. Some thunder is also possible. Mostly cloudy, with a low around 28. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Wednesday - A chance of snow showers before 11am, then rain and snow showers likely. Some thunder is also possible. Partly sunny, with a high near 45. West wind 5 to 10 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Wednesday Night- A chance of rain and snow showers before 11pm, then a slight chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 25. West wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Thursday - Mostly sunny, with a high near 48. Light south wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Thursday Night- Mostly cloudy, with a low around 30.

Friday - Rain likely before 11am, then rain and snow. High near 46. Chance of
precipitation is 80%. New snow accumulation of less than a half inch possible.

Friday Night - Rain and snow. Cloudy, with a low around 28.

Saturday - Snow showers. Mostly cloudy, with a high near 42.

Saturday Night - A chance of snow showers. Mostly cloudy, with a low around 22.

Sunday - A chance of snow showers. Mostly cloudy, with a high near 41.

Sunday Night - Snow showers likely. Mostly cloudy, with a low around 21.

Monday - A chance of snow showers. Partly sunny, with a high near 42.

A wind advisory is in effect from 11:00 a.m. until 7:00 p.m. Tuesday with winds 15-25 mph with gusts up to 35 mph.