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Buoy 46012 Half Moon Bay
Longitude = 122.70W Latitude = 37.45N
FAQs

 

Frequency Analysis - Current Hour
(Swell height in each period/frequency band)
Measurement Date/Time (GMT)07/20
22:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
22:00:00 (GMT) on 07/20
Sea Height:3.7 ft
Primary Swell Height: 1.6 ft
Primary Swell Period: 14.7 secs
Surf Height1.9 ft

 

24 Hour Observation

Date
(Month/Day)
Time
(GMT)
Sea Height
[>5 secs]
(ft)
Primary Swell Secondary Swell Tertiary Swell Estimated Surf Height (ft)Primary Period (secs)
Height
(ft)
Period
(secs)
Height
(ft)
Period
(secs)
Height
(ft)
Period
(secs)
07/2022:00:003.7 1.6 se14.7 secs2.4 se7.1 secs1.2 se 11.4secs1.9 -2.4 14.7
07/2021:00:003.6 1.3 se16.3 secs2.4 se7.1 secs1.1 se 12.7secs1.7 -2.1 16.3
07/2020:00:003.8 1.4 se16.2 secs2.5 se7.1 secs1.3 se 12.6secs1.8 -2.3 16.2
07/2019:00:004.2 1.6 se15.0 secs3.3 se7.2 secs1.0 se 11.4secs2.0 -2.4 15.0
07/2018:00:004.5 3.4 se7.2 secs1.2 se14.9 secs1.0 se 11.1secs2.0 -2.5 7.2
07/2017:00:004.6 3.4 se7.2 secs1.2 se16.3 secs0.9 se 12.7secs2.0 -2.5 7.2
07/2016:00:004.6 3.4 se7.1 secs1.5 se14.8 secs1.0 se 11.3secs1.9 -2.4 7.1
07/2015:00:004.0 2.9 se7.7 secs1.3 se14.7 secs1.0 se 11.5secs1.8 -2.2 7.7
07/2014:00:004.0 1.5 se14.7 secs2.9 se7.2 secs1.2 se 11.4secs1.7 -2.2 14.7
07/2013:00:003.9 1.2 se16.4 secs2.6 se7.1 secs1.3 se 12.6secs1.6 -2.0 16.4
07/2012:00:003.9 1.4 se14.8 secs2.6 se7.1 secs1.1 se 11.4secs1.7 -2.1 14.8
07/2011:00:003.8 1.5 se14.6 secs2.5 se7.1 secs1.4 se 11.4secs1.8 -2.3 14.6
07/2010:00:004.2 3.0 se6.7 secs1.1 se16.5 secs1.3 se 12.5secs1.6 -2.0 6.7
07/2009:00:004.1 1.3 se16.8 secs2.7 se7.1 secs1.2 se 12.6secs1.7 -2.1 16.8
07/2008:00:003.7 1.3 se14.4 secs2.4 se7.1 secs0.8 se 17.7secs1.5 -1.8 14.4
07/2007:00:004.3 3.1 se7.1 secs1.4 se14.3 secs0.9 se 10.5secs1.8 -2.2 7.1
07/2006:00:004.2 2.8 se7.2 secs1.3 se12.5 secs0.8 se 16.0secs1.6 -2.0 7.2
07/2005:00:004.3 3.1 se7.8 secs1.0 se14.2 secs0.0 se 0.0secs1.9 -2.4 7.8
07/2004:00:004.1 2.8 se7.2 secs1.0 se14.3 secs0.6 se 17.8secs1.6 -2.0 7.2
07/2003:00:004.3 3.0 se7.7 secs1.2 se16.6 secs1.4 se 12.6secs1.8 -2.3 7.7
07/2002:00:004.3 3.2 se7.2 secs1.1 se12.3 secs0.7 se 16.9secs1.8 -2.3 7.2
07/2001:00:004.3 3.1 se7.7 secs1.1 se14.7 secs1.0 se 11.3secs1.9 -2.4 7.7
07/2000:00:003.6 2.3 se7.7 secs1.3 se12.4 secs0.9 se 16.4secs1.4 -1.8 7.7
07/1923:00:003.9 2.8 se7.7 secs1.3 se12.3 secs0.7 se 16.5secs1.7 -2.1 7.7

 

Surf Height Scale
Size Scale (ft)
>11-22-33-44-55-66-77-88-99-1010-1111-1212-1313-1414-1515-2020-2525-3030-3535-4040-4545+

Swell Period Scal
Period Scale (secs)
6.36.77.17.78.39.11011.112.514.316.7202533.3

 

Current Weather Conditions
Buoy 46012
21:00:00 (GMT) on 07/20
Combined Sea Height:5.6 ft
Dominant Period:7.0 secs
Wind Speed: 15.6 kts
Wind Gust: 19.5 kts
Wind Direction:300 degrees
Barometric Pressure:1018.5 mbs
Air Temperature: 57.0 degrees
Water Temperature:55.2 degrees

 

24 Hour Weather Observation

Date
(Month/Day)
Time
(GMT)
Combined Sea Height (ft)Dominant Period
(secs)
Wind Speed
(kts)
Gust
(kts)
Wind Direction
(degrees)
Barometric Pressure
(mbs)
Air Temperature
(F)
Water Temperature
(F)
07/2021:00:005.67.015.619.53001018.557.055.2
07/2020:00:005.67.013.717.63001018.856.855.2
07/2019:00:005.97.013.715.63001019.256.555.2
07/2018:00:006.67.015.619.53101019.456.555.0
07/2017:00:006.97.013.717.63101019.356.355.2
07/2016:00:007.28.015.619.53101018.955.655.2
07/2015:00:007.27.015.619.53101018.355.454.7
07/2014:00:006.68.017.619.53101018.255.254.5
07/2013:00:006.27.017.621.43101018.055.455.2
07/2012:00:006.27.019.523.43101017.355.655.6
07/2011:00:006.27.019.523.43101017.055.955.4
07/2010:00:005.97.019.523.43101016.856.754.9
07/2009:00:006.67.013.717.63001017.056.854.9
07/2008:00:006.67.015.621.43001017.156.754.7
07/2007:00:005.97.019.525.43001016.756.854.7
07/2006:00:006.97.019.523.43001016.457.054.7
07/2005:00:006.97.021.425.42901016.356.855.0
07/2004:00:006.98.019.525.43001016.257.055.2
07/2003:00:006.68.015.619.53001016.256.855.2
07/2002:00:006.68.015.617.63001016.357.055.2
07/2001:00:006.67.015.617.63001016.057.255.2
07/2000:00:006.68.013.717.63101016.557.055.2
07/1923:00:005.67.011.715.63101016.956.855.2
07/1922:00:005.98.013.717.63101017.256.555.2

 

000154849 ___0.180919
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