Rain / Flood Event

December 2005 - January 2006

created by Cadee Hale & George Taylor (OCS)
 

The Northwest has been in a very wet weather pattern since mid-December. There has been extensive flooding, numerous mudslides, and other weather-related problems, in direct contrast to last winter's very dry conditions.

 

31 Days of Really Wet Weather

The National Weather Service released the following statement on January 18:

 

Public Information Statement
National Weather Service Portland OR
225 pm (PST) Wednesday January 18 2006

...Significant precipitation falls across northwest Oregon and southwest Washington from December 18, 2005 through January 17, 2006...A persistent wet weather pattern has produced measurable rainfall for 30 of the past 31 days across northwest Oregon and southwest Washington (from December 18 through January 17). This weather pattern has frequently produced very heavy rainfall that caused flooding over a large portion of the area. Rainfall totals from some selected stations from December 18 through January 17 are listed below:

 

 

Location
Precipitation
(inches)
Normal
% of Normal
Astoria
26.89
9.45
285%
Portland Airport
13.52
5.04
268%
Salem
18.76
5.78
325%
Eugene
17.53
7.23
243%
Vancouver
14.45
5.71
253%
Hillsboro
15.27
5.77
265%
Troutdale
13.72
5.86
234%
Government Camp
22.41
13.1
171%
Marion Forks
27.37
11.18
245%
Laurel Mtn
54.86
19.18
286%
Bonneville
23.97
11.63
206%
Scotts Mill
25.6
12.25
209%
Cougar WA
29.17
17.64
165%
Detroit
34.79
13.43
259%
Cottage Grove
16.94
7.13
238%
Please note...These data do not include data for today...January 18, 2006.

www.weather.gov/portland
 

Oregon Climate Service went back into our archives to determine if any of these were new records. We found that many of the 31-day totals listed above were new records, or nearly so. For example:

Station
Dec 18-Jan 17
total (inches)
Record (in.)
Year set
This year's rank
Astoria
26.89
24.82
12/12/98
1
PDX
13.52
14.75
01/17/56
3
Salem
18.76
18.32
01/03/34
1
Hillsboro
15.27
15.46
01/02/97
2
Laurel Mtn
54.86
53.80
01/02/97
1
Corvallis Hyslop
19.88
19.43
01/02/97
1
 

Local Flooding, Mid-Willamette Valley


Rivers in the Corvallis-Albany-Philomath area have risen to levels not seen since 1996 and 1997. Smaller tributaries flooded first, followed by the Willamette, which reached its maximum levels on January 19, 2006. The Advanced Hydrological Prediction System graph for the Willamette River at Albany shows the river exceeding flood stage but predicted to decline over the next several days.

 

A few pictures taken in the Corvallis area appear below:

53rd St. near Mary's River

Walnut Grove in Avery Park

Brooklane Dr. near Hwy 20

(looking North)

Brooklane Dr. near Hwy 20

(looking South)

Mary's River @ Brooklane Dr.

 

Park across Willamette from Corvallis

Pedestrian walkway in Mary's River flood plain

 

Aerial Photos -

January 19, 2006 in the Corvallis-Albany area taken by George Taylor. Thanks to Dick Kizer and Mike Halbleib for the aircraft and piloting: