COLUMBIA RIVER BAR 20NM West of Columbia River Mouth (46029)

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Marine Data Graph

Current Weather/Wave Observations

Air Temperature: 57° F
Humidity: 81
Wind direction (W Dir): WSW (235 - 244 Degrees)
Wind Speed (W Spd): 13.6 kts (15.7 mph)
Wind Gust (W Spd): 17.5 kts (20.1 mph)
Dominant Wave Period (DWP): 10 sec
Dominant Wave Height (DWH): 14.11 ft
Dominant Wave Range (DWR): exactly 14.1 ft
Wind Wave Period (WWP): 4 sec
Wind Wave Height (WWH): 6.56 ft
Wind Wave Range (WWR): 5.74 - 7.38 ft
Wave Swell Period (WSP): 10 sec
Wave Swell Height (WSH): 13.12 ft
Wave Swell Range (WSR): 12.30 - 13.94 ft
Atmospheric Pressure (AP): 30.00 in
Pressure Tendency (PT): +0.13 in
Increasing, then steady; or increasing, then increasing more slowly

Updated: 5:50 AM PDT on October 22, 2017

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Current Wave Detail Observations

Water Depth: 440 ft
Wave Height: 13.88 ft
Spectral Peak Period: 10.0 sec
Average Wave Period: 8.0 sec
Sampling Interval: 0.6 sec
Wave Record: 2400 sec

Updated: 5:00 AM PDT on October 22, 2017

General Information

Location: 46.159 North -124.514 West
Buoy Type: 3-meter discus buoy
Buoy Hull: 3D78
Payload: AMPS payload
Owned by: NDBC
Windspeed: Measured by obtained from anemometer
Sea Surface: Measured by Intake

Weather and Wave Data

Time Temp Humidity Wind Dominant Wave Wind Wave Wave Swell Pressure
  Air
(°F)
Water
(°F)
  Dir Speed
(kts)
Speed
(mph)
Period
(sec)
Height
(ft)
Range
(ft)
Period
(sec)
Height
(ft)
Range
(ft)
Period
(sec)
Height
(ft)
Range
(ft)
Atmo.
(in)
Tend.
(in)
20:50 58 54 100 SSW 27.2 31.3 10 17.72 exactly 17.7 10 16.40 15.58 - 17.22 12 6.56 5.74 - 7.38 29.69 -
21:50 56 54 98 West 17.5 20.1 10 17.39 exactly 17.4 5 9.84 9.02 - 10.66 10 13.12 12.30 - 13.94 29.75 +0.06
22:50 55 54 100 SW 13.6 15.7 10 16.08 exactly 16.1 6 4.92 4.10 - 5.74 10 14.76 13.94 - 15.58 29.76 +0.07
23:50 55 54 100 South 11.7 13.4 10 14.76 exactly 14.8 6 4.92 4.10 - 5.74 10 14.76 13.94 - 15.58 29.77 +0.08
00:50 56 55 98 West 15.6 17.9 10 15.75 exactly 15.7 5 8.20 7.38 - 9.02 10 13.12 12.30 - 13.94 29.80 +0.06
01:50 56 55 98 SW 17.5 20.1 11 16.08 exactly 16.1 6 6.56 5.74 - 7.38 11 14.76 13.94 - 15.58 29.84 +0.07
02:50 57 55 81 WSW 21.4 24.6 11 15.09 exactly 15.1 7 6.56 5.74 - 7.38 11 13.12 12.30 - 13.94 29.87 +0.10
03:50 58 55 73 WSW 15.6 17.9 11 15.75 exactly 15.7 7 6.56 5.74 - 7.38 11 14.76 13.94 - 15.58 29.91 +0.11
04:50 57 55 83 WSW 9.7 11.2 10 13.78 exactly 13.8 5 3.28 2.46 - 4.10 10 13.12 12.30 - 13.94 29.96 +0.12
05:50 57 55 81 WSW 13.6 15.7 10 14.11 exactly 14.1 4 6.56 5.74 - 7.38 10 13.12 12.30 - 13.94 30.00 +0.13

Detailed Wave Spectra

Time Water Depth Wave Height Spectral Peak Period Average Wave Period Sampling Interval Wave Record
20:00 440 ft 16.93 ft 10.0 sec 7.6 sec 0.6 sec 2400 sec
01:00 440 ft 15.62 ft 10.0 sec 8.0 sec 0.6 sec 2400 sec
03:00 440 ft 15.12 ft 11.4 sec 8.1 sec 0.6 sec 2400 sec
05:00 440 ft 13.88 ft 10.0 sec 8.0 sec 0.6 sec 2400 sec