SAN FRANCISCO 18NM West of San Francisco, CA (46026)

Conditions for Sunday

Daily
Weekly
Monthly
Marine Data Graph

Current Weather/Wave Observations

Air Temperature: 51° F
Wind direction (W Dir): SSE (155 - 164 Degrees)
Wind Speed (W Spd): 19.4 kts (22.4 mph)
Wind Gust (W Spd): 23.3 kts (26.8 mph)
Dominant Wave Period (DWP): 11 sec
Dominant Wave Height (DWH): 6.89 ft
Dominant Wave Range (DWR): exactly 6.9 ft
Wind Wave Period (WWP): 6 sec
Wind Wave Height (WWH): 3.28 ft
Wind Wave Range (WWR): 2.46 - 4.10 ft
Wave Swell Period (WSP): 11 sec
Wave Swell Height (WSH): 6.56 ft
Wave Swell Range (WSR): 5.74 - 7.38 ft
Atmospheric Pressure (AP): 29.79 in
Pressure Tendency (PT): -0.01 in
Steady or increasing, then decreasing; or decreasing, then decreasing more rapidly

Updated: 6:50 AM PST on February 19, 2017

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Current Wave Detail Observations

Water Depth: 174 ft
Wave Height: 7.02 ft
Spectral Peak Period: 11.4 sec
Average Wave Period: 6.8 sec
Sampling Interval: 0.6 sec
Wave Record: 2400 sec

Updated: 7:00 AM PST on February 19, 2017

General Information

Location: 37.755 North -122.839 West
Buoy Type: 3-meter discus buoy
Buoy Hull: 3D24
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 52 54
-
WNW 15.6 17.9 12 9.84 exactly 9.8 6 4.92 4.10 - 5.74 12 8.20 7.38 - 9.02 29.77 +0.08
21:50 52 54
-
West 11.7 13.4 12 10.17 exactly 10.2 3 3.28 2.46 - 4.10 12 9.84 9.02 - 10.66 29.78 +0.06
22:50 52 54
-
West 11.7 13.4 13 9.51 exactly 9.5 6 3.28 2.46 - 4.10 13 8.20 7.38 - 9.02 29.80 +0.05
23:50 52 54
-
West 11.7 13.4 12 8.20 exactly 8.2 6 3.28 2.46 - 4.10 12 8.20 7.38 - 9.02 29.81 +0.04
00:50 51 54
-
WSW 7.8 8.9 12 8.20 exactly 8.2 3 1.64 0.82 - 2.46 12 8.20 7.38 - 9.02 29.80 +0.02
02:50 51 54
-
SSW 9.7 11.2 10 7.22 exactly 7.2 4 1.64 0.82 - 2.46 10 6.56 5.74 - 7.38 29.81 -
03:50 51 54
-
South 9.7 11.2 11 7.55 exactly 7.5 4 1.64 0.82 - 2.46 11 6.56 5.74 - 7.38 29.80 -
04:50 51 54
-
South 13.6 15.7 10 6.89 exactly 6.9 6 1.64 0.82 - 2.46 10 6.56 5.74 - 7.38 29.80 -0.01
05:50 51 54
-
SSE 15.6 17.9 13 7.22 exactly 7.2 6 3.28 2.46 - 4.10 13 6.56 5.74 - 7.38 29.80 -0.01
06:50 51 54
-
SSE 19.4 22.4 11 6.89 exactly 6.9 6 3.28 2.46 - 4.10 11 6.56 5.74 - 7.38 29.79 -0.01

Detailed Wave Spectra

Time Water Depth Wave Height Spectral Peak Period Average Wave Period Sampling Interval Wave Record
20:00 174 ft 10.24 ft 12.9 sec 7.3 sec 0.6 sec 2400 sec
23:00 174 ft 9.48 ft 12.9 sec 8.3 sec 0.6 sec 2400 sec
00:00 174 ft 8.27 ft 12.1 sec 8.0 sec 0.6 sec 2400 sec
01:00 174 ft 8.23 ft 12.1 sec 8.0 sec 0.6 sec 2400 sec
02:00 174 ft 7.94 ft 10.0 sec 8.1 sec 0.6 sec 2400 sec
04:00 174 ft 7.38 ft 10.8 sec 8.0 sec 0.6 sec 2400 sec
07:00 174 ft 7.02 ft 11.4 sec 6.8 sec 0.6 sec 2400 sec