Storm Summary with Borderline to Shallow Vertical Profile (AGL) of the 2007-2008 Winter Season (November - March) - 5 Storms

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

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Storm Summary of 2006-2007 Winter Season (November - March)

Storm Summary of 2007-2008 Winter Season (November - March)

Storm Summary of 2008-2009 Winter Season (December - March)

Storm Summary of 2010-2011 Winter Season (November - March)

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
Virga to Rain
Rain to Virga
Freezing Rain/Rain
Virga to Rain to Virga
Rain to Virga to Rain
Virga
Unknown
Continuity
Continuous
Scattered
Average
All
Page
Temp. (°C)
6.61
5.96
RH (%)
84.5
85.8
Wind Direction
184°
217°
Wind Speed (m/s)
7.6
6.1
Pressure (hPa)
1019
1017
Precipitation (in)
0.56
0.18
Total Precipitation (in.)
0.90
AGL
Tall
Tall to Borderline
Tall to Borderline to Tall
Tall to Shallow to Borderline / Tall
Tall to Shallow
Borderline
Borderline to Shallow
Borderline to Tall
Borderline to Tall to Shallow/Borderline
Shallow
Shallow to Tall/Borderline
Shallow to Tall/ Borderline to Shallow
Shallow to Tall to Borderline
Avg. Duration (hrs)
15.04
Trends
Wind Direction
Temperature
RH
Pressure
Year
Month
Day
Type
Continuity
Start Time (UTC)
Duration (hrs)
Avg. Temp. (°C)
Avg.
At Storm Maturity
Wind Speed (m/s)
Precip. (in)
before*
during
before*
during
before*
during
2007
11
11
Rain to Virga
Scattered
09:00
3
7.4
S
S
10.0
0.02
increasing
up - down
decreasing
flat
increasing
increasing
2007
11
30
Virga to Rain
Continuous
19:00
3
4.0
SE
SE
3.0
none
flat
increasing
flat
decreasing
decreasing
decreasing
2007
12
07
Rain
Scattered
03:00
19
6.6
NW
NW
5.2
none
decreasing
down - up
decreasing
decreasing
down - up
increasing
2007
12
28
Rain
Scattered
14:30
22
5.8
SW
SW
9.3
0.08
flat
up - down
flat
down - up
increasing
down - up
2008
02
12
Rain
Scattered
21:00
30
6.0
SW
NW
2.8
0.8
increasing
down - up
decreasing
up - down
decreasing
increasing

Version 2, 11 July 2013

web page credits: Micheal Tai Bryant, Sandra Yuter

This research is a collaboration by the
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. 0544766. Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).

contacts:
Dr. Sandra Yuter seyuter@ncsu.edu