Rain Storm Summary of 2005-2006 Winter Season (November - March) - 28 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)

Grey highlighted rows: Drizzle or light rain

* = 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
7.55
RH (%)
80.0
82.8
Wind Direction
161°
165°
Wind Speed (m/s)
9.9
9.4
Pressure (hPa)
1014
1012
Precipitation (in)
0.70
0.93
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.)
21.28
Avg. Duration (hrs)
31.55
Trends
Wind Direction
Temperature
RH
Pressure
Year
Month
Day
AGL
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
2005
12
13
Shallow
Continuous
01:00
1.5
2.8
E
E
2.3
trace
increasing
decreasing
decreasing
increasing
down - up
increasing
2005
12
20
Tall
Scattered
11:00
58
4.7
SE
E
15.1
2.49
increasing
increasing
decreasing
increasing
decreasing
up - down
2005
12
23
Borderline
Scattered
7:00
1.5
11.5
S
S
2.8
none
increasing
increasing
decreasing
decreasing
increasing
increasing
2005
12
25
Tall
Scattered
01:00
68
9.6
SE
E
12.5
0.90
up - down
up - down
decreasing
down - up
decreasing
down - up
2005
12
30
Tall
Scattered
0:00
35
6.1
SE
SE
14.8
2.60
up - down
down - up
decreasing
increasing
decreasing
decreasing
2005
12
31
Tall to Borderline
Scattered
19:00
51
8.0
SE
E
10.7
0.52
decreasing
up - down
increasing
down - up
increasing
increasing
2006
01
05
Tall
Scattered
20:30
51
7.9
SE
E
10.9
2.62
decreasing
up - down
flat
up - down
up - down
down - up
2006
01
08
Bordline to Tall
Scattered
16:30
87
9.4
S
SW
11.7
3.11
flat
up - down
increasing
down - up
increasing
down - up
2006
01
12
Tall to Shallow to Borderline
Scattered
13:00
60.5
7.1
SE
SE
9.5
1.26
decreasing
up - down
flat
decreasing
up - down
decreasing
2006
01
15
Borderline to Tall to Borderline
Scattered
07:00
18
4.8
S
SE
6.2
0.07
increasing
decreasing
increasing
decreasing
increasing
increasing
2006
01
19
Shallowto Tall to Borderline
Scattered
07:30
41
7.7
S
S
8.3
0.57
decreasing
up - down
increasing
flat
increasing
down - up
2006
01
25
Shallow to Tall to Shallow
Scattered
18:00
16
6.9
S
SE
9.7
0.23
flat
flat
increasing
up - down
increasing
increasing
2006
01
26
Borderline to Tall to Borderline
Scattered
17:00
59.5
7.0
S
SE
13.5
1.16
flat
increasing
decreasing
flat
flat
down - up
2006
01
29
Borderline to Tall to Borderline
Scattered
11:00
38
9.5
S
E
14.2
1.93
flat
increasing
flat
decreasing
increasing
down - up
2006
02
01
Shallow
Scattered
14:30
1.5
8.9
S
S
14.0
none
increasing
flat
decreasing
flat
increasing
increasing
2006
02
02
Shallow to Tall
Scattered
03:00
21.5
10.2
S
S
9.8
0.39
up - down
down - up
down - up
increasing
decreasing
increasing
2006
02
03
Tall to Shallow
Scattered
15:00
39
8.5
S
S
13.6
0.60
flat
up - down
flat
decreasing
up - down
down - up
2006
02
13
Borderline to Shallow
Scattered
13:00
8
6.2
SE
SE
2.4
0.07
down - up
increasing
up - down
up - down
decreasing
up - down
2006
02
23
Borderline to Tall to Borderline
Scattered
04:30
24
7.9
SW
NW
9.4
0.09
flat
up - down
flat
down - up
decreasing
down - up
2006
03
08
Borderline to Tall to Borderline
Scattered
11:00
46
3.6
S
SW
11.5
1.35
down - up
up - down
up - down
increasing
up - down
decreasing
2006
03
10
Shallow to Tall
Scattered
15:00
10.5
4.0
SE
E
11.6
0.06
flat
increasing
down - up
decreasing
decreasing
increasing
2006
03
11
Shallow to Tall to Shallow
Scattered
21:30
20
3.9
SW
NW
4.0
0.25
increasing
down - up
decreasing
increasing
increasing
increasing
2006
03
14
Borderline to Tall to Borderline
Scattered
14:00
15
6.7
SE
SW
7.2
0.12
increasing
down - up
increasing
down - up
flat
increasing
2006
03
16
Borderline to Tall to Shallow
Scattered
04:00
54
7.3
S
SE
10.7
0.58
up - down
up - down
down - up
decreasing
decreasing
down - up
2006
03
19
Shallow
Continuous
00:30
0.5
10.0
W
W
3.0
none
decreasing
flat
decreasing
increasing
decreasing
decreasing
2006
03
28
Tall
Scattered
04:30
9
12.5
SE
S
12.1
none
decreasing
decreasing
flat
increasing
decreasing
increasing
2006
03
29
Shallow to Borderline to Shallow
Scattered
14:30
17.5
8.6
SE
E
6.1
0.15
decreasing
up - down
up - down
increasing
increasing
increasing
2006
03
30
Shallow to Borderline to Shallow
Scattered
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