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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)12/20
01:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
01:00:00 (GMT) on 12/20
Sea Height:8.3 ft
Primary Swell Height: 5.3 ft
Primary Swell Period: 17.0 secs
Surf Height7.2 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)
12/2001:00:008.3 5.3 se17.0 secs4.1 se20.3 secs6.4 se 12.7secs7.2 -9.0 17.0
12/2000:00:009.4 6.3 se17.0 secs7.3 se12.7 secs4.4 se 21.0secs8.6 -10.7 17.0
12/1923:00:007.9 5.6 se16.4 secs6.5 se12.9 secs3.1 se 19.5secs7.3 -9.2 16.4
12/1922:00:007.9 6.0 se12.7 secs4.4 se16.7 secs3.2 se 20.6secs6.1 -7.6 12.7
12/1921:00:006.7 4.9 se12.5 secs3.4 se16.5 secs2.4 se 20.2secs4.9 -6.1 12.5
12/1920:00:006.6 5.2 se12.7 secs1.7 se19.3 secs2.6 se 9.3secs5.3 -6.6 12.7
12/1919:00:005.6 3.9 se14.0 secs3.0 se10.3 secs2.1 se 5.5secs4.4 -5.5 14.0
12/1918:00:006.2 4.8 se12.4 secs2.8 se9.4 secs1.5 se 16.7secs4.8 -6.0 12.4
12/1917:00:006.0 5.1 se12.6 secs1.6 se16.7 secs1.8 se 9.3secs5.2 -6.4 12.6
12/1916:00:006.6 5.6 se12.4 secs1.6 se16.7 secs2.5 se 9.4secs5.6 -7.0 12.4
12/1915:00:005.7 4.4 se14.0 secs2.9 se10.4 secs1.3 se 7.3secs4.9 -6.1 14.0
12/1914:00:006.8 6.2 se12.7 secs1.4 se16.7 secs1.8 se 9.2secs6.2 -7.8 12.7
12/1913:00:005.8 4.3 se14.1 secs3.2 se10.4 secs1.8 se 17.6secs4.8 -6.1 14.1
12/1912:00:006.8 5.9 se12.8 secs2.5 se9.2 secs1.3 se 17.3secs6.0 -7.5 12.8
12/1911:00:005.9 5.1 se12.7 secs2.0 se9.2 secs1.1 se 16.7secs5.2 -6.5 12.7
12/1910:00:006.1 5.2 se12.7 secs2.3 se9.1 secs1.1 se 16.7secs5.3 -6.6 12.7
12/1909:00:005.3 3.8 se14.0 secs2.8 se10.3 secs1.4 se 17.4secs4.2 -5.3 14.0
12/1908:00:005.7 4.9 se12.9 secs2.3 se9.2 secs0.9 se 16.7secs5.0 -6.2 12.9
12/1907:00:005.6 4.4 se13.9 secs2.8 se10.2 secs0.9 se 17.4secs4.9 -6.1 13.9
12/1906:00:005.6 4.6 se12.6 secs2.4 se9.2 secs1.1 se 16.7secs4.6 -5.7 12.6
12/1905:00:006.7 5.5 se12.6 secs1.6 se17.2 secs2.7 se 9.2secs5.6 -6.9 12.6
12/1904:00:007.3 6.1 se12.5 secs2.8 se9.3 secs1.3 se 16.7secs6.1 -7.7 12.5
12/1903:00:007.9 6.7 se12.6 secs3.3 se9.2 secs1.4 se 16.7secs6.7 -8.4 12.6
12/1902:00:008.5 7.6 se12.7 secs3.0 se9.2 secs1.1 se 16.7secs7.7 -9.6 12.7

 

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
01:00:00 (GMT) on 12/20
Combined Sea Height:10.8 ft
Dominant Period:14.0 secs
Wind Speed: 1.9 kts
Wind Gust: 3.9 kts
Wind Direction:360 degrees
Barometric Pressure:1019.7 mbs
Air Temperature: 58.5 degrees
Water Temperature:60.4 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)
12/2001:00:0010.814.01.93.93601019.758.560.4
12/2000:00:009.513.03.95.82801019.858.660.4
12/1923:00:0010.514.03.95.82501019.858.660.4
12/1922:00:008.914.03.95.81501019.458.160.6
12/1921:00:009.513.01.93.93601019.357.660.6
12/1920:00:008.511.09.811.73401019.557.260.6
12/1919:00:008.214.015.617.61901019.160.160.6
12/1918:00:007.513.019.521.41801019.759.460.6
12/1917:00:008.211.019.523.41801019.959.460.6
12/1916:00:007.513.019.523.41801019.759.060.6
12/1915:00:008.511.019.527.31801019.058.660.6
12/1914:00:007.512.021.425.41701018.559.060.6
12/1913:00:007.913.019.521.41701018.459.260.6
12/1912:00:007.212.015.619.51701019.057.960.6
12/1911:00:008.213.019.521.41801019.558.660.6
12/1910:00:007.213.019.521.41701019.558.160.6
12/1909:00:007.513.017.621.41901019.858.360.6
12/1908:00:006.612.015.623.41801020.159.560.6
12/1907:00:006.914.017.621.41801020.358.660.6
12/1906:00:006.914.013.715.61801020.360.160.6
12/1905:00:006.911.013.717.61801020.360.160.6
12/1904:00:007.912.013.717.61901020.159.960.6
12/1903:00:008.511.013.715.61801019.959.960.6
12/1902:00:009.213.011.713.71601019.859.560.6

 

000102750 ___5.031748
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