Rain Storm Summary of 2007-2008 Winter Season (November - March) - 21 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)

* = 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
6.16
RH (%)
84.5
93.2
Wind Direction
184°
189°
Wind Speed (m/s)
7.6
8.0
Pressure (hPa)
1019
1017
Precipitation (in)
0.56
0.70
Total Precipitation (in.)
13.23
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)
32.64
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
2007
12
01
Borderline to Tall to Borderline
Scattered
15:00
80
8.6
SE
SE
14.2
3.81
flat
increasing
decreasing
up - down
decreasing
increasing
2007
12
07
Borderline to Shallow
Scattered
03:00
19
6.6
NW
NW
5.2
none
decreasing
down - up
decreasing
decreasing
down - up
increasing
2007
12
16
Tall to Borderline to Tall
Scattered
21:30
50
6.0
SE
SE
12.8
0.37
increasing
down - up
decreasing
up - down
decreasing
up - down
2007
12
19
Tall to Borderline
Scattered
06:30
49
6.4
SW
S
9.4
0.89
decreasing
decreasing
decreasing
up - down
increasing
increasing
2007
12
23
Tall to Borderline
Scattered
09:00
39
6.7
SW
S
7.8
1.45
flat
up - down
increasing
decreasing
flat
down - up
2007
12
28
Borderline to Shallow
Scattered
14:30
22
5.8
SW
SW
9.3
0.08
flat
up - down
flat
down - up
increasing
down - up
2008
01
06
Tall to Borderline
Scattered
10:00
32
3.3
S
SE
8.4
0.24
decreasing
up - down
flat
down - up
increasing
increasing
2008
01
08
Tall to Borderline
Continuous
03:30
34
11.6
SE
SE
11.6
0.75
up - down
down - up
down - up
up - down
decreasing
down - up
2008
01
19
Borderline to Tall to Shallow
Scattered
15:30
27.5
3.0
SW
SE
3.2
0.07
decreasing
up - down
increasing
increasing
decreasing
decreasing
2008
01
26
Tall to Shallow
Scattered
16:00
48.5
2.1
SE
SE
5.2
0.99
increasing
up - down
decreasing
up - down
decreasing
down - up
2008
01
28
Borderline to Tall
Scattered
22:00
29.5
3.8
SW
S
12.3
0.35
increasing
down - up
decreasing
increasing
increasing
down - up
2008
01
30
Borderline to Tall to Shallow
Scattered
09:00
27
4.2
S
SE
11.8
2.04
flat
up - down
increasing
down - up
increasing
down - up
2008
02
04
Shallow to Tall
Scattered
14:00
44
5.2
S
SE
7.3
0.29
increasing
up - down
decreasing
down - up
increasing
down - up
2008
02
12
Borderline to Shallow
Scattered
21:00
30
6.0
SW
NW
2.8
0.8
increasing
down - up
decreasing
up - down
decreasing
increasing
2008
02
25
Shallow to Borderline to Shallow
Scattered
01:00
19
9.4
SE
SE
6.4
0.02
up - down
down - up
up - down
flat
flat
increasing
2008
03
02
Shallow
Continuous
10:00
1
4.3
SW
S
2.7
none
down - up
decreasing
decreasing
increasing
increasing
flat
2008
03
10
Tall to Shallow
Scattered
16:00
30
11.3
SW
S
10.6
0.20
flat
up - down
flat
up - down
down - up
increasing
2008
03
16
Shallow to Tall to Borderline
Scattered
18:00
50
9.2
SE
SE
9.2
0.37
down - up
increasing
decreasing
up - down
increasing
decreasing
2008
03
26
Tall to Borderline
Scattered
18:00
33.5
5.5
SW
S
8.2
0.43
increasing
down - up
decreasing
up - down
up - down
up - down
2008
03
30
Shallow to Tall to Borderline
Scattered
18:00
9.5
5.2
SE
SE
4.5
0.07
increasing
up - down
decreasing
down - up
increasing
increasing
2008
03
31
Borderline
Scattered
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 between 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