CW3E AR Update: 7 March Outlook

March 7, 2018

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Weak Atmospheric River expected to impact the U.S. West Coast this week

  • A weak or potentially moderate AR is expected to make landfall over northern CA and the Pacific Northwest on 8 March 2018
  • This AR will produce precipitation over the Pacific Northwest and northern CA over the next three days
  • Precipitation amounts during this event are not expected to be extreme, with the highest accumulations predicted to be less than 3 inches

Click IVT or IWV image to see loop of 0-78 hour GFS forecast

Valid 0600 UTC 7 March – 1200 UTC 10 March 2018

 

 

 

 

 

A second AR is expected to make landfall this weekend

  • A second weak Atmospheric River is expected to make landfall over southern CA and Baja CA on 10 March 2018
  • This AR is expected to produce precipitation over the southern CA with two day accumulations of less than 1 inch

Click IVT or IWV image to see loop of 60-120 hour GFS forecast

Valid 1800 UTC 9 March – 0600 UTC 12 March 2018

 

 

 

 

 

Summary provided by B. Kawzenuk, J. Kalansky, and F.M. Ralph; 12 PM PT Wednesday 7 March 2018

*Outlook products are considered experimental