Storm Summary with Scattered Profile of 2007-2008 Winter Season (November - March) - 56 Storms

Portland International Airport Weather Station, Oregon (45°35'N , 122°36'W / Elevation: 5.8 m)
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Storm Summary of 2005-2006 Winter Season (November - March)

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)

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
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
6.54
RH (%)
84.5
84.8
Wind Direction
184°
186°
Wind Speed (m/s)
7.6
7.7
Pressure (hPa)
1019
1019
Precipitation (in)
0.56
0.59
Total Precipitation (in.)
26.13
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)
28.59
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
2007
11
09
Virga to Rain
Borderline to Tall
19:00
19.5
12.2
SE
SE
7.9
0.41
increasing
flat
decreasing
increasing
up - down
decreasing
2007
11
11
Rain to Virga
Borderline to Shallow
09:00
3
7.4
S
S
10.0
0.02
increasing
up - down
decreasing
flat
increasing
increasing
2007
11
12
Virga to Rain
Tall to Shallow to Borderline
10:30
19
10.7
SW
S
11.9
0.15
flat
up - down
decreasing
up - down
decreasing
down - up
2007
11
15
Virga to Rain
Tall to Borderline
00:30
74
10.7
S
W
9.5
1.86
up - down
increasing
down - up
increasing
decreasing
down - up
2007
11
19
Rain to Virga to Rain
Shallow to Tall to Shallow
12:30
22
6.0
SE
SE
5.6
0.45
down - up
up - down
decreasing
up - down
increasing
increasing
2007
11
24
Virga
Borderline
19:00
3
4.6
NE
NE
1.6
none
increasing
increasing
decreasing
decreasing
increasing
decreasing
2007
11
26
Virga to Rain
Tall to Shallow
15:00
36
4.4
SE
SE
5.6
0.57
increasing
increasing
decreasing
increasing
decreasing
down - up
2007
11
28
Virga to Rain
Tall to Borderline
19:00
40
4.0
SE
SE
7.0
1.08
increasing
up - down
flat
up - down
decreasing
up - down
2007
12
01
Rain
Borderline to Tall to Borderline
15:00
80
8.6
SE
SE
14.2
3.81
flat
increasing
decreasing
up - down
decreasing
increasing
2007
12
07
Rain
Borderline to Shallow
03:00
19
6.6
NW
NW
5.2
none
decreasing
down - up
decreasing
decreasing
down - up
increasing
2007
12
08
Virga
Borderline
08:30
2
4.3
NW
NW
1.5
--
decreasing
decreasing
increasing
down - up
increasing
increasing
2007
12
15
Virga to Rain to Virga
Tall to Shallow to Tall
01:00
36
6.5
SE
SE
12.8
0.03
up - down
up - down
decreasing
up - down
decreasing
up - down
2007
12
16
Rain
Tall to Borderline to Tall
21:30
50
6.0
SE
SE
12.8
0.37
increasing
down - up
decreasing
up - down
decreasing
up - down
2007
12
19
Rain
Tall to Borderline
06:30
49
6.4
SW
S
9.4
0.89
decreasing
decreasing
decreasing
up - down
increasing
increasing
2007
12
23
Rain
Tall to Borderline
09:00
39
6.7
SW
S
7.8
1.45
flat
up - down
increasing
decreasing
flat
down - up
2007
12
25
Virga to Rain
Tall to Borderline
16:30
78.5
2.9
S
SE
9.1
1.18
increasing
increasing
flat
flat
decreasing
up - down
2007
12
28
Rain
Borderline to Shallow
14:30
22
5.8
SW
SW
9.3
0.08
flat
up - down
flat
down - up
increasing
down - up
2007
12
29
Virga to Rain
Borderline to Tall to Borderline
17:30
39
3.9
SW
SE
8.6
0.78
down - up
decreasing
flat
down - up
flat
increasing
2008
01
01
Virga
Tall
18:00
3
6.1
SE
SE
21.0
0.00
down - up
increasing
flat
flat
decreasing
decreasing
2008
01
04
Virga to Rain
Tall to Shallow
11:00
43.5
6.1
SE
SE
15.3
0.56
down - up
up - down
flat
down - up
decreasing
down - up
2008
01
06
Rain
Tall to Borderline
10:00
32
3.3
S
SE
8.4
0.24
decreasing
up - down
flat
down - up
increasing
increasing
2008
01
09
Virga to Rain
Tall to Shallow
20:30
53.5
7.4
SE
SE
10.8
0.58
increasing
increasing
up - down
up - down
up - down
down - up
2008
01
12
Virga to Rain
Borderline to Tall to Shallow
07:00
22
8.1
SE
SE
9.6
0.25
decreasing
up - down
up - down
decreasing
decreasing
increasing
2008
01
14
Freezing Rain/Rain
Borderline to Tall to Shallow
18:30
22
3.8
SW
S
9.5
0.43
increasing
up - down
flat
down - up
decreasing
increasing
2008
01
17
Virga to Light Rain
Shallow
16:30
8
1.8
SE
SE
0.3
none
increasing
increasing
flat
down - up
decreasing
decreasing
2008
01
19
Rain
Borderline to Tall to Shallow
15:30
27.5
3.0
SW
SE
3.2
0.07
decreasing
up - down
increasing
increasing
decreasing
decreasing
2008
01
26
Rain
Tall to Shallow
16:00
48.5
2.1
SE
SE
5.2
0.99
increasing
up - down
decreasing
up - down
decreasing
down - up
2008
01
28
Rain
Borderline to Tall
22:00
29.5
3.8
SW
S
12.3
0.35
increasing
down - up
decreasing
increasing
increasing
down - up
2008
01
30
Rain
Borderline to Tall to Shallow
09:00
27
4.2
S
SE
11.8
2.04
flat
up - down
increasing
down - up
increasing
down - up
2008
02
03
Rain to Virga
Shallow to Borderline
18:30
10.5
4.9
SW
SW
1.9
none
increasing
decreasing
decreasing
increasing
increasing
increasing
2008
02
04
Rain
Shallow to Tall
14:00
44
5.2
S
SE
7.3
0.29
increasing
up - down
decreasing
down - up
increasing
down - up
2008
02
06
Virga to Rain
Tall to Borderline
16:30
60
6.8
SW
S
13.1
1.05
decreasing
increasing
up - down
down - up
increasing
down - up
2008
02
10
Virga to Rain to Virga
Tall
0:00
30
10.1
S
SE
7.7
0.04
increasing
down - up
decreasing
up - down
decreasing
down - up
2008
02
12
Virga
Tall
09:00
2
3.6
--
--
0.0
--
decreasing
flat
increasing
flat
decreasing
decreasing
2008
02
12
Rain
Borderline to Shallow
21:00
30
6.0
SW
NW
2.8
0.8
increasing
down - up
decreasing
up - down
decreasing
increasing
2008
02
15
Virga to Rain to Virga
Tall
23:00
4
8.4
NW
NW
2.0
none
increasing
decreasing
decreasing
increasing
decreasing
increasing
2008
02
19
Virga to Rain
Tall to Borderline
21:30
16.5
8.0
SW
W
2.6
0.01
increasing
decreasing
down - up
increasing
increasing
increasing
2008
02
22
Virga to Rain to Virga
Tall
0:00
6
10.8
SE
SE
11.3
none
increasing
decreasing
decreasing
increasing
decreasing
up - down
2008
02
25
Rain
Shallow to Borderline to Shallow
01:00
19
9.4
SE
SE
6.4
0.02
up - down
down - up
up - down
flat
flat
increasing
2008
02
27
Rain to Virga
Tall
12:00
5
7.6
SE
E
4.3
none
down - up
down - up
down - up
up - down
decreasing
increasing
2008
03
01
Virga to Rain
Shallow to Tall
10:00
16
7.8
SE
NW
8.3
0.09
decreasing
up - down
increasing
down - up
increasing
increasing
2008
03
03
Virga to Rain
Tall to Shallow
13:30
7.5
6.7
SW
SE
7.8
0.09
flat
up - down
flat
up - down
decreasing
down - up
2008
03
07
Virga to Rain
Tall to Shallow
19:00
16
8.5
SW
SE
2.8
0.87
increasing
up - down
decreasing
down - up
decreasing
down - up
2008
03
09
Virga
Tall
13:00
5
5.7
E
E
3.3
--
flat
increasing
flat
decreasing
decreasing
increasing
2008
03
10
Rain
Tall to Shallow
16:00
30
11.3
SW
S
10.6
0.20
flat
up - down
flat
up - down
down - up
increasing
2008
03
12
Virga to Rain
Tall to Shallow
09:00
96.5
8.1
SW
SE
8.5
1.39
decreasing
up - down
increasing
down - up
decreasing
down - up
2008
03
16
Rain
Shallow to Tall to Borderline
18:00
50
9.2
SE
SE
9.2
0.37
down - up
increasing
decreasing
up - down
increasing
decreasing
2008
03
19
Virga to Rain
Tall to Borderline
13:00
45.5
6.9
S
SW
8.2
0.66
decreasing
up - down
increasing
down - up
decreasing
increasing
2008
03
21
Virga to Rain
Shallow
19:00
2.5
8.0
SW
SW
2.4
none
increasing
increasing
decreasing
decreasing
increasing
flat
2008
03
23
Virga to Rain
Tall to Borderline
06:00
32.5
8.4
S
SE
9.6
0.28
decreasing
decreasing
increasing
increasing
down - up
down - up
2008
03
24
Rain to Virga
Shallow to Borderline
19:30
7
9.8
NW
NW
4.6
none
increasing
increasing
decreasing
down - up
up - down
decreasing
2008
03
25
Virga to Rain
Borderline to Tall
17:30
18.5
7.6
S
SE
9.7
0.30
increasing
up - down
decreasing
down - up
flat
decreasing
2008
03
26
Rain
Tall to Borderline
18:00
33.5
5.5
SW
S
8.2
0.43
increasing
down - up
decreasing
up - down
up - down
up - down
2008
03
28
Virga to Rain
Borderline to Tall to Borderline
07:30
45.5
4.3
S
SE
11.0
0.52
decreasing
up - down
increasing
down - up
decreasing
down - up
2008
03
30
Rain
Shallow to Tall to Borderline
18:00
9.5
5.2
SE
SE
4.5
0.07
increasing
up - down
decreasing
down - up
increasing
increasing
2008
03
31
Rain
Borderline
11:00
11
5.2
SE
NE
4.9
0.01
down - up
increasing
flat
decreasing
increasing
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