Storm Summary with Continuous Profile of 2006-2007 Winter Season (November - March) - 15 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/Snow
Virga to Rain to Virga
Rain to Virga to Rain
Virga
Unknown
Continuity
Continuous
Scattered
Average
All
Page
Temp. (°C)
7.28
7.80
RH (%)
78.8
81.7
Wind Direction
165°
137°
Wind Speed (m/s)
8.6
9.7
Pressure (hPa)
1019
1017
Precipitation (in)
0.59
1.01
Total Precipitation (in.)
12.17
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 to Shallow
Borderline to Tall to Borderline
Shallow
Shallow to Borderline to (Shallow)
Shallow to Tall to Shallow
Shallow to Tall to Borderline
Avg. Duration (hrs)
16.77
Trends
Wind Direction
Temperature
RH
Pressure
Year
Month
Day
Type
AGL
Start Time (UTC)
Duration (hrs)
Avg. Temp. (°C)
Avg.
At Storm Maturity
Wind Speed (m/s)
Precip. (in)
before*
during
before*
during
before*
during
2006
11
5
Virga to Rain
Tall to Shallow
15:00
59.5
16.0
NW
NW
11.2
5.99
decreasing
up - down
increasing
decreasing
increasing
down - up
2006
11
10
Virga to Rain
Tall to Borderline
09:00
30
8.0
SE
SE
9.9
1.25
decreasing
up - down
up - down
increasing
decreasing
down - up
2006
11
19
Virga to Rain
Tall to Shallow
12:30
15
8.0
SE
SE
11.7
0.73
flat
flat
flat
increasing
flat
down - up
2006
12
05
Virga
Tall
02:30
1
3.9
E
E
5.3
--
up - down
flat
down - up
flat
decreasing
down - up
2006
12
09
Virga to Rain to Virga
Tall
05:30
17
5.1
SE
SE
11.1
0.22
decreasing
increasing
increasing
up - down
decreasing
increasing
2006
12
24
Rain
Tall to Shallow
15:30
22
5.8
SE
SE
12.7
1.37
increasing
down - up
decreasing
increasing
decreasing
down - up
2007
01
01
Rain
Tall to Shallow
17:30
9
3.1
SW
SW
11.7
0.12
increasing
down - up
flat
up - down
flat
decreasing
2007
01
02
Virga to Rain to Virga
Tall
15:30
34
12.8
S
SE
13.1
0.60
increasing
decreasing
decreasing
up - down
decreasing
up - down
2007
01
08
Virga to Rain
Shallow
19:00
2.5
6.2
E
E
1.1
0.02
increasing
up - down
increasing
down - up
up - down
decreasing
2007
02
09
Rain
Borderline to Tall to Borderline
07:00
12
7.8
SE
SE
12.9
0.29
down - up
down - up
up - down
up - down
decreasing
increasing
2007
02
24
Rain
Borderline to Tall to Borderline
03:00
27
5.1
SE
SE
12.5
1.05
up - down
down - up
increasing
down - up
increasing
decreasing
2007
02
27
Rain
Borderline to Tall to Borderline
16:00
12
4.8
S
SE
19.1
0.29
increasing
increasing
decreasing
up - down
decreasing
increasing
2007
03
15
Rain
Tall
21:30
1
12.0
NE
NE
1.0
none
increasing
increasing
decreasing
decreasing
decreasing
decreasing
2007
03
18
Rain
Shallow
16:00
2
14.3
SW
SW
8.4
none
flat
increasing
increasing
decreasing
flat
increasing

Version 1, 14 August 2012

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