CW3E AR Update: 5-7 December 2018 Summary

December 11, 2018

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Summary of Atmospheric River that impacted Southern California on 5-7 Dec. 2018

  • An AR associated with a cutoff low made landfall near Point Concepcion, CA around 00 UTC 05 December 2018
  • The AR propagated southward bringing AR conditions to a larger portion of Coastal Southern California
  • The cutoff low also propagated over extreme Southern California, resulting in more precipitation for Los Angeles, Orange, and San Diego Counties on the 7th
  • Click IVT or IWV image to see loop of GFS Analsyis

    Valid 0000 UTC 03 December – 0000 UTC 07 December 2018





    Summary provided by M. Lamjiri, F. M. Ralph, B. Kawzenuk, C. Hecht; 10 AM PT 11 December 2018