CW3E AR Update: 19 January 2017 Outlook

January 19, 2017

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Update on 3 ARs Forecast to Impact the West Coast Over Next Several Days

  • AR 1 made landfall over the Pacific Northwest and propagated southward impacting the entire U.S. West Coast
  • 1–6 inches of precipitation have fallen over the last 48-h over portions of California
  • AR 2 and 3 are forecast to make landfall over Southern and Central CA, respectively, over the next 5 days
  • Forecast certainty is high for AR2 but still low for AR 3
  • NOAA Weather Prediction Center precipitation forecasts for the next 5 days in Southern CA are as high as 10 inches over the high elevations and 1–5 inches in the valleys














Summary provided by C. Hecht, and F.M. Ralph; 3 PM PT Thurs. 19 Jan. 2017