HALF MOON BAY 24NM SSW of San Francisco, CA (46012)

Conditions for Sunday

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Marine Data Graph

Current Weather/Wave Observations

Air Temperature: 53° F
Wind direction (W Dir): NW (315 - 324 Degrees)
Wind Speed (W Spd): 11.7 kts (13.4 mph)
Wind Gust (W Spd): 13.6 kts (15.7 mph)
Dominant Wave Period (DWP): 10 sec
Dominant Wave Height (DWH): 3.94 ft
Dominant Wave Range (DWR): exactly 3.9 ft
Wind Wave Period (WWP): 5 sec
Wind Wave Height (WWH): 3.28 ft
Wind Wave Range (WWR): 2.46 - 4.10 ft
Wave Swell Period (WSP): 10 sec
Wave Swell Height (WSH): 3.28 ft
Wave Swell Range (WSR): 2.46 - 4.10 ft
Atmospheric Pressure (AP): 30.12 in
Pressure Tendency (PT): +0.03 in
Increasing, then steady; or increasing, then increasing more slowly

Updated: 8:50 AM PDT on May 28, 2017

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Current Wave Detail Observations

Water Depth: 686 ft
Wave Height: 4.59 ft
Spectral Peak Period: 10.0 sec
Average Wave Period: 6.3 sec
Sampling Interval: 0.6 sec
Wave Record: 2400 sec

Updated: 8:00 AM PDT on May 28, 2017

General Information

Location: 37.363 North -122.881 West
Buoy Type: 3-meter discus buoy
Buoy Hull: 3D69
Payload: ARES payload
Owned by: NDBC
Windspeed: Measured by obtained from anemometer
Sea Surface: Measured by Intake
Note: "Potential Explosion Hazard Exists for this Buoy"

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 55 56
-
NW 7.8 8.9 10 4.27 exactly 4.3 3 1.64 0.82 - 2.46 10 4.92 4.10 - 5.74 30.09 -0.01
21:50 55 55
-
NW 9.7 11.2 9 3.94 exactly 3.9 4 1.64 0.82 - 2.46 9 3.28 2.46 - 4.10 30.10 -
22:50 56 55
-
NW 9.7 11.2 10 3.94 exactly 3.9 5 1.64 0.82 - 2.46 10 3.28 2.46 - 4.10 30.11 +0.01
23:50 55 55
-
NW 11.7 13.4 9 3.61 exactly 3.6 5 1.64 0.82 - 2.46 9 3.28 2.46 - 4.10 30.11 +0.01
00:50 55 55
-
NNW 7.8 8.9 9 3.94 exactly 3.9 4 1.64 0.82 - 2.46 9 3.28 2.46 - 4.10 30.11 +0.01
01:50 55 55
-
NW 11.7 13.4 14 3.61 exactly 3.6 5 1.64 0.82 - 2.46 14 3.28 2.46 - 4.10 30.10 -
02:50 55 55
-
NW 11.7 13.4 13 3.94 exactly 3.9 4 1.64 0.82 - 2.46 13 3.28 2.46 - 4.10 30.09 -0.02
03:50 54 55
-
NW 11.7 13.4 11 4.27 exactly 4.3 4 1.64 0.82 - 2.46 11 3.28 2.46 - 4.10 30.08 -0.03
04:50 54 55
-
NW 11.7 13.4 11 4.27 exactly 4.3 4 1.64 0.82 - 2.46 11 3.28 2.46 - 4.10 30.08 -0.02
05:50 54 54
-
NW 9.7 11.2 12 4.27 exactly 4.3 5 1.64 0.82 - 2.46 12 3.28 2.46 - 4.10 30.09 -
06:50 54 54
-
NW 9.7 11.2 14 4.27 exactly 4.3 5 1.64 0.82 - 2.46 14 3.28 2.46 - 4.10 30.10 +0.02
07:50 54 54
-
NNW 9.7 11.2 10 4.59 exactly 4.6 4 1.64 0.82 - 2.46 10 4.92 4.10 - 5.74 30.11 +0.03
08:50 53 54
-
NW 11.7 13.4 10 3.94 exactly 3.9 5 3.28 2.46 - 4.10 10 3.28 2.46 - 4.10 30.12 +0.03

Detailed Wave Spectra

Time Water Depth Wave Height Spectral Peak Period Average Wave Period Sampling Interval Wave Record
23:00 686 ft 4.00 ft 10.0 sec 7.6 sec 0.6 sec 2400 sec
00:00 686 ft 3.67 ft 9.1 sec 7.3 sec 0.6 sec 2400 sec
01:00 686 ft 4.07 ft 9.1 sec 7.3 sec 0.6 sec 2400 sec
02:00 686 ft 3.51 ft 13.8 sec 6.8 sec 0.6 sec 2400 sec
03:00 686 ft 3.97 ft 12.9 sec 6.9 sec 0.6 sec 2400 sec
04:00 686 ft 4.10 ft 11.4 sec 6.5 sec 0.6 sec 2400 sec
06:00 686 ft 4.17 ft 12.1 sec 6.0 sec 0.6 sec 2400 sec
08:00 686 ft 4.59 ft 10.0 sec 6.3 sec 0.6 sec 2400 sec