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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)09/18
20:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
20:00:00 (GMT) on 09/18
Sea Height:5.9 ft
Primary Swell Height: 4.2 ft
Primary Swell Period: 14.5 secs
Surf Height4.9 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)
09/1820:00:005.9 4.2 se14.5 secs3.8 se11.3 secs0.8 se 20.0secs4.9 -6.1 14.5
09/1819:00:005.7 4.4 se14.3 secs2.7 se10.3 secs0.5 se 20.0secs5.1 -6.4 14.3
09/1818:00:006.4 4.4 se14.4 secs4.7 se11.3 secs2.9 se 17.5secs5.1 -6.3 14.4
09/1817:00:006.2 4.4 se14.5 secs2.9 se17.6 secs3.9 se 11.4secs5.1 -6.4 14.5
09/1816:00:006.0 4.2 se14.2 secs2.3 se17.7 secs3.3 se 10.3secs4.7 -5.9 14.2
09/1815:00:006.0 3.9 se14.5 secs4.3 se11.2 secs1.9 se 7.8secs4.5 -5.6 14.5
09/1814:00:006.1 4.5 se14.2 secs2.5 se17.7 secs3.0 se 10.1secs5.1 -6.4 14.2
09/1813:00:006.0 4.2 se14.3 secs2.7 se17.9 secs3.2 se 10.1secs4.8 -6.0 14.3
09/1812:00:005.6 3.6 se14.4 secs2.4 se17.8 secs3.7 se 11.3secs4.2 -5.2 14.4
09/1811:00:005.9 3.1 se16.7 secs3.8 se12.4 secs2.9 se 9.2secs4.1 -5.1 16.7
09/1810:00:006.5 3.7 se16.8 secs3.5 se12.6 secs3.6 se 9.2secs4.9 -6.2 16.8
09/1809:00:006.1 4.1 se14.5 secs2.8 se17.7 secs3.6 se 11.4secs4.8 -6.0 14.5
09/1808:00:006.1 3.9 se16.8 secs3.2 se12.6 secs1.6 se 20.0secs5.3 -6.6 16.8
09/1807:00:005.3 3.3 se16.7 secs2.8 se12.7 secs1.3 se 20.0secs4.4 -5.5 16.7
09/1806:00:005.7 4.5 se14.4 secs2.7 se17.8 secs2.5 se 10.1secs5.2 -6.5 14.4
09/1805:00:005.2 3.7 se16.6 secs3.6 se12.8 secs1.5 se 20.0secs4.9 -6.1 16.6
09/1804:00:005.2 4.3 se16.9 secs2.0 se20.0 secs3.2 se 12.8secs5.8 -7.2 16.9
09/1803:00:005.2 4.3 se14.5 secs3.1 se17.8 secs2.3 se 10.1secs5.0 -6.3 14.5
09/1802:00:005.0 4.6 se14.3 secs2.2 se17.6 secs1.8 se 10.2secs5.2 -6.5 14.3
09/1801:00:004.4 3.3 se16.8 secs3.3 se12.8 secs1.7 se 20.0secs4.5 -5.6 16.8
09/1800:00:005.6 4.6 se16.2 secs4.8 se13.2 secs1.6 se 20.0secs5.9 -7.4 16.2
09/1723:00:005.6 4.8 se16.2 secs4.8 se13.1 secs1.6 se 20.0secs6.2 -7.7 16.2
09/1722:00:005.3 4.7 se16.6 secs3.6 se13.0 secs1.8 se 20.0secs6.2 -7.8 16.6
09/1721:00:005.4 4.8 se16.4 secs4.1 se13.1 secs1.9 se 20.0secs6.3 -7.9 16.4

 

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
20:00:00 (GMT) on 09/18
Combined Sea Height:6.6 ft
Dominant Period:12.0 secs
Wind Speed: 7.8 kts
Wind Gust: 9.8 kts
Wind Direction:180 degrees
Barometric Pressure:1011.4 mbs
Air Temperature: 65.7 degrees
Water Temperature:65.1 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)
09/1820:00:006.612.07.89.81801011.465.765.1
09/1819:00:007.216.07.89.81701011.565.564.9
09/1818:00:006.913.07.89.81701011.665.564.9
09/1817:00:007.511.07.89.81701011.365.364.9
09/1816:00:007.513.09.811.71801010.965.364.8
09/1815:00:007.213.09.811.71801010.465.364.8
09/1814:00:007.210.09.811.71801009.765.364.8
09/1813:00:007.513.09.811.71901009.165.364.8
09/1812:00:007.513.09.811.71901008.565.564.8
09/1811:00:007.210.011.713.71801008.065.564.8
09/1810:00:007.511.013.715.61801007.965.764.9
09/1809:00:008.59.013.717.61801008.165.564.9
09/1808:00:007.99.013.717.61701008.165.564.9
09/1807:00:007.917.015.617.61701008.165.864.9
09/1806:00:006.917.015.619.51601008.065.164.9
09/1805:00:007.213.015.619.51601007.864.964.9
09/1804:00:006.617.015.617.61601008.064.464.2
09/1803:00:006.217.015.619.51501007.564.664.0
09/1802:00:005.917.015.619.51601007.364.664.4
09/1801:00:005.613.015.617.61601007.264.864.6
09/1800:00:004.917.013.717.61601007.664.964.8
09/1723:00:005.914.013.715.61501007.964.464.8
09/1722:00:005.914.011.713.71601008.664.264.6
09/1721:00:005.617.011.715.61501008.864.064.4

 

000100150 ___0.232957
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