CW3E AR Update: 1 February 2017 Outlook

February 1, 2017

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Precipitation forecast for Northern CA Pacific Northwest

  • A low pressure system is forecast to propagate toward Northern CA and Oregon
  • Up to 6 inches of precipitation are forecast to fall over higher elevations, while low elevations of N. CA could see as much as 2.5 inches
  • This event is not representative of an AR structure (long and narrow plumes IVT and IWV), though the IVT and IWV thresholds associated with an AR will be met at certain locations
  • Extended forecasts indicate the potential for an AR to make landfall in the next 5–7 days

Click IVT or IWV image to see loop of 0-126 hour GFS forecast

Valid 1200 UTC 6 Feb – 1800 UTC 11 Feb 2017





Summary provided by C. Hecht and F.M. Ralph; 12 PM PT Wed 01 Feb. 2017