Storm Summary with Scattered Profile of 2005-2006 Winter Season (November - March) - 53 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
Rain/Snow
Virga to Rain to Virga
Rain to Virga to Rain
Virga
Continuity
Continuous
Scattered
Average
All
Page
Temp. (°C)
7.38
7.41
RH (%)
80.0
80.4
Wind Direction
161°
162°
Wind Speed (m/s)
9.9
9.9
Pressure (hPa)
1014
1014
Precipitation (in)
0.70
0.72
AGL
Tall
Tall to Borderline
Tall to Shallow
Borderline
Borderline to Shallow
Borderline to Tall
Borderline to Tall to Borderline
Shallow
Shallow to Borderline to Shallow
Shallow to Tall to Borderline
Total Precipitation (in.)
30.91
Avg. Duration (hrs)
28.58
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
2005
11
24
Virga to Rain
Tall to Borderline
19:00
46
5.1
S
SE
7.3
1.39
increasing
up - down
decreasing
up - down
decreasing
down - up
2005
11
26
Rain to Virga to Rain
Borderline to Tall to Borderline
23:30
14.5
4.6
SE
SW
6.6
0.05
increasing
decreasing
decreasing
increasing
increasing
down - up
2005
11
28
Virga to Rain
Borderline to Tall
19:00
29
4.9
S
S
15.6
0.34
increasing
down - up
decreasing
increasing
decreasing
down - up
2005
12
01
Virga to Rain
Tall to Shallow
08:00
72
4.4
S
S
10.8
1.43
decreasing
down - up
increasing
flat
decreasing
increasing
2005
12
18
Rain/Snow
Tall
21:00
32
0.9
E
E
22.3
0.31
increasing
down - up
flat
down - up
decreasing
increasing
2005
12
20
Rain
Tall
11:00
58
4.7
SE
E
15.1
2.49
increasing
increasing
decreasing
increasing
decreasing
up - down
2005
12
23
Rain
Borderline
7:00
1.5
11.5
S
S
2.8
none
increasing
increasing
decreasing
decreasing
increasing
increasing
2005
12
23
Virga to Rain
Tall
16:30
9.5
8.6
SE
SE
10.7
0.05
decreasing
increasing
up - down
down - up
increasing
decreasing
2005
12
25
Rain
Tall
01:00
68
9.6
SE
E
12.5
0.90
up - down
up - down
decreasing
down - up
decreasing
down - up
2005
12
28
Virga to Rain
Tall to Shallow
02:30
36.5
8.6
SE
SE
11.5
1.79
decreasing
up - down
flat
down - up
decreasing
down - up
2005
12
30
Rain
Tall
0:00
35
6.1
SE
SE
14.8
2.60
up - down
down - up
decreasing
increasing
decreasing
decreasing
2005
12
31
Rain
Tall to Borderline
19:00
51
8.0
SE
E
10.7
0.52
decreasing
up - down
increasing
down - up
increasing
increasing
2006
01
04
Virga
Borderline
22:30
3.5
8.9
SE
SE
15.6
--
increasing
flat
decreasing
up - down
decreasing
decreasing
2006
01
05
Rain
Tall
20:30
51
7.9
SE
E
10.9
2.62
decreasing
up - down
flat
up - down
up - down
down - up
2006
01
08
Rain
Bordline to Tall
16:30
87
9.4
S
SW
11.7
3.11
flat
up - down
increasing
down - up
increasing
down - up
2006
01
12
Rain
Tall to Shallow to Borderline
13:00
60.5
7.1
SE
SE
9.5
1.26
decreasing
up - down
flat
decreasing
up - down
decreasing
2006
01
15
Rain
Borderline to Tall to Borderline
07:00
18
4.8
S
SE
6.2
0.07
increasing
decreasing
increasing
decreasing
increasing
increasing
2006
01
16
Virga to Rain
Tall
06:30
41.5
7.0
SE
SE
12.3
1.66
decreasing
up - down
down - up
down - up
flat
decreasing
2006
01
18
Rain to Virga
Borderline to Tall to Borderline
07:00
10
6.5
SE
SE
7.4
0.18
down - up
increasing
increasing
up - down
flat
decreasing
2006
01
19
Rain
Shallowto Tall to Borderline
07:30
41
7.7
S
S
8.3
0.57
decreasing
up - down
increasing
flat
increasing
down - up
2006
01
21
Virga to Rain
Shallow to Borderline
13:30
11
7.5
S
S
7.1
0.06
flat
increasing
increasing
flat
increasing
increasing
2006
01
22
Virga
Tall
16:00
1
6.1
S
S
3.0
--
flat
flat
increasing
flat
increasing
increasing
2006
01
25
Rain
Shallow to Tall to Shallow
18:00
16
6.9
S
SE
9.7
0.23
flat
flat
increasing
up - down
increasing
increasing
2006
01
26
Rain
Borderline to Tall to Borderline
17:00
59.5
7.0
S
SE
13.5
1.16
flat
increasing
decreasing
flat
flat
down - up
2006
01
29
Rain
Borderline to Tall to Borderline
11:00
38
9.5
S
E
14.2
1.93
flat
increasing
flat
decreasing
increasing
down - up
2006
02
01
Rain
Shallow
14:30
1.5
8.9
S
S
14.0
none
increasing
flat
decreasing
flat
increasing
increasing
2006
02
02
Rain
Shallow to Tall
03:00
21.5
10.2
S
S
9.8
0.39
up - down
down - up
down - up
increasing
decreasing
increasing
2006
02
03
Rain
Tall to Shallow
15:00
39
8.5
S
S
13.6
0.60
flat
up - down
flat
decreasing
up - down
down - up
2006
02
08
Virga to Rain to Virga
Borderline
12:30
6
7.0
SW
SE
3.9
none
decreasing
flat
increasing
flat
increasing
increasing
2006
02
12
Virga to Rain to Virga
Shallow to Borderline to Shallow
08:00
5
6.4
SE
SE
9.0
none
decreasing
flat
increasing
down - up
increasing
increasing
2006
02
13
Rain
Borderline to Shallow
13:00
8
6.2
SE
SE
2.4
0.07
down - up
increasing
up - down
up - down
decreasing
up - down
2006
02
14
Rain to Virga
Borderline to Tall
11:30
14
3.9
SW
SW
3.8
0.12
down - up
increasing
increasing
up - down
decreasing
decreasing
2006
02
21
Virga to Rain
Shallow
00:00
40
4.3
SW
NE
2.4
0.08
increasing
increasing
down - up
increasing
decreasing
down - up
2006
02
23
Rain
Borderline to Tall to Borderline
04:30
24
7.9
SW
NW
9.4
0.09
flat
up - down
flat
down - up
decreasing
down - up
2006
02
26
Virga
Tall
07:00
2
6.5
E
E
8.0
--
decreasing
decreasing
increasing
up - down
decreasing
decreasing
2006
02
26
Virga to Rain
Tall to Borderline
17:30
87
6.8
S
SW
7.8
1.21
decreasing
down - up
decreasing
increasing
decreasing
down - up
2006
03
02
Virga to Rain
Tall to Borderline
03:00
17
9.3
SE
E
18.2
none
flat
decreasing
flat
increasing
decreasing
increasing
2006
03
04
Virga to Rain
Borderline to Shallow
00:00
12
8.6
S
S
13.0
0.01
up - down
decreasing
down - up
increasing
down - up
increasing
2006
03
06
Virga to Rain
Borderline to Tall
07:30
42
8.6
S
SW
10.6
0.23
decreasing
up - down
increasing
increasing
decreasing
increasing
2006
03
08
Rain
Borderline to Tall to Borderline
11:00
46
3.6
S
SW
11.5
1.35
down - up
up - down
up - down
increasing
up - down
decreasing
2006
03
10
Rain
Shallow to Tall
15:00
10.5
4.0
SE
E
11.6
0.06
flat
increasing
down - up
decreasing
decreasing
increasing
2006
03
11
Rain
Shallow to Tall to Shallow
21:30
20
3.9
SW
NW
4.0
0.25
increasing
down - up
decreasing
increasing
increasing
increasing
2006
03
13
Virga to Rain
Borderline
22:30
7
8.9
SE
SE
15.3
0.01
increasing
decreasing
decreasing
increasing
decreasing
decreasing
2006
03
14
Rain
Borderline to Tall to Borderline
14:00
15
6.7
SE
SW
7.2
0.12
increasing
down - up
increasing
down - up
flat
increasing
2006
03
15
Rain to Virga to Rain
Borderline
14:00
5.5
6.4
SE
E
13.9
0.03
down - up
increasing
flat
decreasing
down - up
increasing
2006
03
16
Rain
Borderline to Tall to Shallow
04:00
54
7.3
S
SE
10.7
0.58
up - down
up - down
down - up
decreasing
decreasing
down - up
2006
03
21
Rain to Virga
Borderline
04:00
52
9.2
SE
SE
8.5
0.19
decreasing
down - up
down - up
up - down
down - up
increasing
2006
03
23
Virga to Rain
Tall to Shallow
18:00
36
11.4
S
SE
10.5
0.28
increasing
decreasing
decreasing
increasing
decreasing
down - up
2006
03
25
Virga to Rain
Borderline to Tall to Borderline
18:00
8
8.3
W
SW
6.7
0.21
flat
up - down
up - down
flat
decreasing
increasing
2006
03
28
Rain
Tall
04:30
9
12.5
SE
S
12.1
none
decreasing
decreasing
flat
increasing
decreasing
increasing
2006
03
29
Virga to Rain
Tall to Shallow
00:00
7
15.4
SE
NW
6.8
none
increasing
decreasing
decreasing
increasing
decreasing
down - up
2006
03
29
Rain
Shallow to Borderline to Shallow
14:30
17.5
8.6
SE
E
6.1
0.15
decreasing
up - down
up - down
increasing
increasing
increasing
2006
03
30
Rain
Shallow to Borderline to Shallow
17:30
17
10.1
SE
W
5.7
0.16
increasing
up - down
decreasing
down - up
flat
decreasing

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