CW3E Post-Event Summary: 16-22 October 2019

October 23, 2019

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Unsettled weather pattern produces an extended period of heavy precipitation over the Pacific Northwest

  • Excessive precipitation in western Washington and northwestern Oregon during 16-22 October was associated with a series of storms and landfalling ARs
  • NWS Stage IV data suggests that more than 10 inches of precipitation fell over much of the Olympic Mountains and North Cascades
  • The last episode of heavy precipitation on 21–22 Oct triggered flooding along the Snoqualmie and Snohomish Rivers






Summary provided by C. Castellano, C. Hecht, B. Kawzenuk, J. Kalansky, F. M. Ralph; 4 PM PT 23 October 2019