Surface Observations from Portland International Airport Weather Station, Oregon (45°35'N , 122°36'W / Elevation: 5.8 m)

Choose a season to view... Winter 2005-2006 Winter 2006-2007 Winter 2007-2008 Winter 2008-2009 Winter 2009-2010 Winter 2010-2011 Winter 2011-2012 Blue highlighted rows: Snow, freezing rain, or mixed cases Grey highlighted rows: Virga or mix of virga and rain, no snow * = general trend 6 hours before storm Tall (> 4.0 km AGL)   Continuity for Storm Maturity Borderline ( 2.5-4.0 km AGL)   Scattered: Several Breaks Shallow (< 2.5 km AGL)		Storm Summary Rain 21 Virga to Rain 27 Rain to Virga 5 Freezing Rain/Rain 1 Virga to Rain to Virga 4 Rain to Virga to Rain 1 Virga 5 Unknown 4 Continuity Continuous 8 Scattered 56 Average All Img. Temp. (°C) 6.61 RH (%) 84.5 Wind Direction 184° Wind Speed (m/s) 7.6 Pressure (hPa) 1019 Precipitation (in) 0.56 Total Precipitation (in.) 30.09	AGL Tall 10 Tall to Borderline 14 Tall to Borderline to Tall 1 Tall to Shallow to Borderline / Tall 2 Tall to Shallow 8 Borderline 3 Borderline to Shallow 5 Borderline to Tall 3 Borderline to Tall to Shallow/Borderline 7 Shallow 3 Shallow to Tall/Borderline 4 Shallow to Tall/ Borderline to Shallow 2 Shallow to Tall to Borderline 2 Avg. Duration (hrs) 26.27

Version 2, 26 July 2013

web page credits: Micheal Tai Bryant, Spencer Rhodes, Sandra Yuter

Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University

This material is based upon work supported by the National Science Foundation under Grant No. ATM-0544766 and ATM-0908420
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s)
and do not necessarily reflect the view of the National Science Foundation (NSF).

contacts:
Dr. Sandra Yuter seyuter@ncsu.edu