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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)08/21
10:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
10:00:00 (GMT) on 08/21
Sea Height:3.4 ft
Primary Swell Height: 1.6 ft
Primary Swell Period: 12.7 secs
Surf Height1.6 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)
08/2110:00:003.4 1.6 se12.7 secs2.0 se9.0 secs1.1 se 16.2secs1.6 -2.0 12.7
08/2109:00:003.8 1.8 se12.8 secs2.5 se9.0 secs1.2 se 5.9secs1.9 -2.3 12.8
08/2108:00:003.6 1.9 se11.2 secs2.1 se7.8 secs0.9 se 16.0secs1.7 -2.1 11.2
08/2105:00:004.3 2.9 se9.9 secs1.3 se13.6 secs1.6 se 6.7secs2.3 -2.9 9.9
08/2104:00:004.9 3.4 se9.9 secs1.7 se13.9 secs1.6 se 6.7secs2.7 -3.4 9.9
08/2103:00:004.8 3.6 se9.1 secs1.9 se12.5 secs0.5 se 16.7secs2.6 -3.2 9.1
08/2102:00:004.6 3.5 se9.9 secs1.3 se13.7 secs1.5 se 6.7secs2.7 -3.4 9.9
08/2101:00:004.4 3.2 se9.9 secs1.6 se14.0 secs0.6 se 18.0secs2.5 -3.2 9.9
08/2100:00:004.9 3.8 se9.9 secs1.7 se13.9 secs1.4 se 6.7secs3.0 -3.8 9.9
08/2023:00:004.4 3.2 se9.8 secs1.6 se13.9 secs1.5 se 6.7secs2.5 -3.1 9.8
08/2022:00:004.4 3.3 se9.1 secs2.0 se12.7 secs1.4 se 15.9secs2.4 -3.0 9.1
08/2021:00:004.0 2.8 se10.0 secs1.5 se14.1 secs1.4 se 6.7secs2.2 -2.7 10.0
08/2020:00:003.7 2.0 se12.6 secs2.4 se9.2 secs1.2 se 5.6secs2.0 -2.5 12.6
08/2018:00:004.7 3.2 se9.8 secs1.7 se14.0 secs1.6 se 6.7secs2.5 -3.2 9.8
08/2017:00:005.0 3.5 se9.8 secs1.5 se14.0 secs2.0 se 6.2secs2.8 -3.4 9.8
08/2016:00:005.4 3.2 se10.0 secs2.0 se13.9 secs2.4 se 6.7secs2.6 -3.2 10.0
08/2015:00:005.0 2.3 se12.9 secs2.9 se9.8 secs2.0 se 6.7secs2.4 -3.0 12.9
08/2014:00:005.1 3.2 se9.9 secs1.9 se13.9 secs2.0 se 6.7secs2.6 -3.2 9.9
08/2013:00:005.3 3.3 se9.9 secs2.0 se14.2 secs2.4 se 6.7secs2.6 -3.3 9.9
08/2011:00:004.8 2.1 se14.3 secs3.0 se9.2 secs1.5 se 5.9secs2.4 -3.0 14.3
08/2010:00:004.4 2.2 se12.9 secs2.7 se9.8 secs1.8 se 6.7secs2.2 -2.8 12.9
08/2009:00:004.6 3.1 se9.1 secs1.9 se14.3 secs1.5 se 6.0secs2.3 -2.8 9.1
08/2008:00:004.8 2.1 se14.2 secs3.2 se9.1 secs1.6 se 6.0secs2.3 -2.9 14.2
08/2007:00:004.3 1.9 se14.2 secs2.7 se9.0 secs1.4 se 5.9secs2.1 -2.6 14.2

 

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
04:00:00 (GMT) on 08/21
Combined Sea Height:6.2 ft
Dominant Period:9.0 secs
Wind Speed: 5.8 kts
Wind Gust: 7.8 kts
Wind Direction:330 degrees
Barometric Pressure:1014.3 mbs
Air Temperature: 57.0 degrees
Water Temperature:58.8 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)
08/2104:00:006.29.05.87.83301014.357.058.8
08/2103:00:006.910.07.811.73201013.957.458.8
08/2102:00:006.99.07.811.73101013.757.258.8
08/2101:00:006.610.07.811.73101013.457.258.8
08/2100:00:006.29.09.811.73001013.457.458.6
08/2023:00:006.99.09.811.72901013.558.158.8
08/2022:00:006.29.07.89.82901013.758.358.8
08/2021:00:006.29.01.93.93001014.157.959.0
08/2020:00:005.69.05.87.82901014.157.759.0
08/2019:00:005.210.03.95.83301014.457.258.8
08/2017:00:006.99.07.89.83101014.457.058.6
08/2016:00:007.59.011.713.73101014.357.058.5
08/2015:00:007.99.011.715.63101014.056.858.5
08/2014:00:007.29.013.715.63001013.556.558.5
08/2013:00:007.59.013.717.63101013.156.558.5
08/2012:00:007.59.013.717.63101013.056.758.6
08/2011:00:006.99.011.715.63201012.956.758.8
08/2010:00:006.910.013.715.63101012.757.058.6
08/2009:00:006.29.013.719.53301012.457.458.6
08/2008:00:006.69.013.715.63201012.758.658.6
08/2007:00:006.68.011.717.63101012.859.058.6
08/2006:00:006.29.011.713.73001012.859.558.5
08/2005:00:005.69.09.811.73001013.159.558.6
08/2004:00:005.99.09.811.73001013.359.458.6

 

000155479 ___0.099089
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