Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

Automatically generated image showing areas of 0-6km vertical shear.


Hour - 1	Hour - 2	Hour -3

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Shear (0-6Km)

The 0-6 km shear vector. Values generally greater than 40 knots are supportive of supercells, although in high instability environments this can be as low as 30 knots.

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Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Convective Parameters Shear - 0-6km