Following the passage of a cold front, lake effect snow is becoming a topic downwind of the Great Lakes, especially downwind of Lake Michigan. Shown is an MRMS radar composite of the region, accessible from Labs.

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MRMS radar composite is showing widespread snow clouds around the Great Lakes region as a winter storm is bringing a risk of heavy snowfall, strong winds and blizzard conditions through today. Freezing rain is also a concern in the northeastern states.

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The WPC has highlighted a high risk area of excessive precipitation in Southern California for Wednesday as a multi-day rainfall event is underway. There is a risk of flooding and landslides, as well as rockslides. Feets of snow could fall this week in Sierra Nevada Mountains.

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It is a very windy day in the northwestern US today as a powerful storm is bringing stormy winds to a wide area. As the day progresses, the high winds will be moving from the Pacific Northwest towards the northern Plains, as illustrated by this scenario from the HRRR model.

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A series of areas of low pressure is expected to bring heavy rain and mountain snow to the Pacific Northwest this week. The first of the systems is expected to arrive tonight.

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Flood watches have been issued in southern California as an atmospheric river is expected to bring heavy rain and mountain snow through the weekend. The rainfall could result in flooding and debris flows. Shown is an MRMS radar composite of southern California.

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Shown is an HRRR scenario of sea level air pressure and precipitation type for California as a strong cyclone and an atmospheric river are expected to bring heavy rain and mountain snowfall, as well as high winds to parts of the state through Saturday.

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Shown is an MRMS radar composite of the northeastern US as bands of lake effect snow continue to affect areas downwind of the Great Lakes.

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