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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)02/18
05:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
05:00:00 (GMT) on 02/18
Sea Height:4.8 ft
Primary Swell Height: 3.1 ft
Primary Swell Period: 14.6 secs
Surf Height3.6 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)
02/1805:00:004.8 3.1 se14.6 secs1.7 se11.4 secs2.4 se 7.2secs3.6 -4.5 14.6
02/1804:00:004.6 3.0 se14.7 secs2.4 se7.2 secs1.4 se 11.3secs3.6 -4.4 14.7
02/1803:00:004.8 3.0 se14.7 secs1.6 se11.4 secs2.3 se 7.7secs3.5 -4.4 14.7
02/1802:00:004.5 3.0 se14.6 secs2.3 se7.7 secs1.5 se 11.4secs3.5 -4.4 14.6
02/1801:00:004.5 3.0 se15.0 secs2.1 se8.3 secs0.0 se 0.0secs3.5 -4.4 15.0
02/1800:00:004.6 2.4 se14.4 secs2.2 se11.2 secs2.7 se 7.8secs2.8 -3.5 14.4
02/1723:00:004.7 2.9 se15.8 secs2.1 se9.1 secs1.4 se 5.9secs3.6 -4.5 15.8
02/1722:00:005.0 2.9 se15.1 secs2.9 se9.0 secs1.4 se 5.9secs3.5 -4.3 15.1
02/1721:00:004.7 2.2 se14.6 secs2.9 se9.0 secs1.3 se 5.9secs2.6 -3.3 14.6
02/1720:00:005.1 2.5 se15.8 secs2.4 se12.8 secs3.0 se 9.1secs3.1 -3.9 15.8
02/1719:00:005.7 3.1 se15.8 secs3.0 se12.7 secs3.1 se 9.1secs3.9 -4.9 15.8
02/1718:00:004.8 2.1 se16.4 secs2.8 se10.0 secs1.8 se 6.7secs2.7 -3.4 16.4
02/1717:00:005.5 2.8 se16.1 secs3.5 se10.1 secs1.8 se 6.7secs3.6 -4.5 16.1
02/1716:00:005.4 3.7 se10.0 secs2.3 se14.9 secs1.9 se 6.7secs3.0 -3.7 10.0
02/1715:00:005.0 3.4 se9.9 secs2.0 se14.7 secs2.0 se 6.8secs2.7 -3.4 9.9
02/1714:00:005.4 3.4 se10.1 secs2.1 se14.6 secs2.1 se 6.7secs2.7 -3.4 10.1
02/1713:00:006.0 4.1 se10.1 secs2.0 se14.6 secs2.3 se 6.7secs3.4 -4.2 10.1
02/1712:00:006.2 4.2 se10.0 secs2.3 se14.4 secs2.4 se 6.7secs3.4 -4.2 10.0
02/1711:00:006.0 4.1 se10.0 secs1.9 se14.1 secs2.3 se 6.7secs3.3 -4.1 10.0
02/1710:00:006.9 4.3 se11.0 secs2.2 se14.3 secs3.9 se 7.8secs3.8 -4.7 11.0
02/1709:00:006.9 4.8 se11.0 secs2.3 se14.3 secs3.0 se 7.8secs4.2 -5.2 11.0
02/1708:00:007.2 5.2 se11.1 secs2.9 se7.8 secs1.2 se 15.4secs4.6 -5.7 11.1
02/1707:00:006.8 4.5 se11.1 secs3.1 se7.8 secs1.4 se 15.2secs4.0 -5.1 11.1
02/1706:00:007.2 4.9 se11.1 secs1.5 se15.8 secs3.1 se 7.7secs4.3 -5.4 11.1

 

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 02/18
Combined Sea Height:6.6 ft
Dominant Period:15.0 secs
Wind Speed: 15.6 kts
Wind Gust: 19.5 kts
Wind Direction:320 degrees
Barometric Pressure:1017.8 mbs
Air Temperature: 53.2 degrees
Water Temperature:54.1 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)
02/1804:00:006.615.015.619.53201017.853.254.1
02/1803:00:006.615.017.619.53201018.053.454.0
02/1802:00:006.615.017.619.53201018.153.654.0
02/1801:00:006.615.017.619.53201017.953.654.1
02/1800:00:006.215.015.617.63301018.653.654.3
02/1723:00:006.68.019.523.43301019.053.454.3
02/1722:00:006.616.017.619.53301019.153.654.3
02/1721:00:006.98.013.717.63301019.553.254.3
02/1720:00:006.68.011.713.73301020.353.254.3
02/1719:00:006.99.011.713.73401020.953.254.1
02/1718:00:007.516.05.89.83201021.353.254.1
02/1717:00:006.610.07.89.80201021.253.254.0
02/1716:00:007.510.09.811.73301021.153.153.8
02/1715:00:007.29.07.89.83401020.752.954.0
02/1714:00:007.29.011.713.73401020.652.554.0
02/1713:00:007.58.09.811.73401020.552.754.0
02/1712:00:008.210.011.715.63401020.452.954.0
02/1711:00:008.59.011.715.63301020.752.954.0
02/1710:00:008.59.011.713.73301021.552.954.1
02/1709:00:009.510.011.715.63301021.953.154.1
02/1708:00:009.210.013.717.63401022.053.154.1
02/1707:00:009.810.011.713.73501022.253.154.1
02/1706:00:009.210.015.617.63401022.053.154.0
02/1705:00:009.89.015.619.53401021.953.153.8

 

000151638 ___0.102092
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