Storm Summary with Tall Vertical Profile (AGL) of the 2007-2008 Winter Season (November - March) - 10 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/Rain
Virga to Rain to Virga
Rain to Virga to Rain
Virga
Unknown
Continuity
Continuous
Scattered
Average
All
Page
Temp. (°C)
6.61
7.24
RH (%)
84.5
75.9
Wind Direction
184°
161°
Wind Speed (m/s)
7.6
7.9
Pressure (hPa)
1019
1018
Precipitation (in)
0.56
0.42
Total Precipitation (in.)
2.10
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)
14.15
Trends
Wind Direction
Temperature
RH
Pressure
Year
Month
Day
Type
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
11
18
Virga to Rain
Continuous
11:00
20
6.0
SW
NW
5.5
0.91
decreasing
decreasing
increasing
increasing
up - down
down - up
2008
01
01
Virga
Scattered
18:00
3
6.1
SE
SE
21.0
0.00
down - up
increasing
flat
flat
decreasing
decreasing
2008
01
02
Virga to Rain
Continuous
06:00
46
3.5
SE
SE
14.9
1.05
flat
down - up
increasing
increasing
decreasing
decreasing
2008
02
10
Virga to Rain to Virga
Scattered
0:00
30
10.1
S
SE
7.7
0.04
increasing
down - up
decreasing
up - down
decreasing
down - up
2008
02
12
Virga
Scattered
09:00
2
3.6
--
--
0.0
--
decreasing
flat
increasing
flat
decreasing
decreasing
2008
02
15
Virga to Rain to Virga
Scattered
23:00
4
8.4
NW
NW
2.0
none
increasing
decreasing
decreasing
increasing
decreasing
increasing
2008
02
22
Virga to Rain to Virga
Scattered
0:00
6
10.8
SE
SE
11.3
none
increasing
decreasing
decreasing
increasing
decreasing
up - down
2008
02
27
Rain to Virga
Scattered
12:00
5
7.6
SE
E
4.3
none
down - up
down - up
down - up
up - down
decreasing
increasing
2008
02
29
Virga to Rain
Continuous
08:00
20.5
10.6
SW
SW
8.9
0.10
decreasing
up - down
increasing
down - up
decreasing
down - up
2008
03
09
Virga
Scattered
13:00
5
5.7
E
E
3.3
--
flat
increasing
flat
decreasing
decreasing
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