CW3E AR Update: 8 November 2017 Outlook

November 8, 2017

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Two ARs Forecasted to Make Landfall over the U.S. West Coast in the Next Week

• A strong AR is currently making landfall over the U.S. West Coast
• This AR is expected to produce up to 6 inches of precipitation over northern CA
• The southerly orientation of this AR will result in the heaviest precipitation over the north Central Valley
• A second, moderate strength, AR is forecasted to make landfall over northern CA, OR, and WA on 12 November 2017
• The second AR is expected to make landfall further north resulting in the highest precipitation over the Olympic and Cascade

Click IVT or IWV image to see loop of 0-168 hour GFS forecast Valid 1200 UTC 8 November – 1200 UTC 15 November 2017

Summary provided by B. Kawzenuk, J. Kalansky, and F.M. Ralph; 12 PM PT Wednesday 8 November 2017

*Outlook products are considered experimental