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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)01/30
15:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
15:00:00 (GMT) on 01/30
Sea Height:7.1 ft
Primary Swell Height: 4.6 ft
Primary Swell Period: 16.4 secs
Surf Height6.0 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)
01/3015:00:007.1 4.6 se16.4 secs3.1 se12.8 secs3.4 se 7.7secs6.0 -7.5 16.4
01/3014:00:005.9 3.6 se16.5 secs2.6 se12.5 secs2.6 se 8.3secs4.7 -5.9 16.5
01/3013:00:006.7 4.8 se16.3 secs2.8 se12.8 secs2.9 se 8.3secs6.3 -7.8 16.3
01/3012:00:005.3 2.5 se16.9 secs2.1 se12.4 secs1.1 se 20.0secs3.4 -4.2 16.9
01/3011:00:005.1 3.3 se16.6 secs2.4 se12.7 secs1.0 se 20.0secs4.3 -5.4 16.6
01/3010:00:006.3 4.6 se17.4 secs2.3 se12.5 secs2.7 se 7.6secs6.4 -8.0 17.4
01/3009:00:005.9 4.1 se17.0 secs1.5 se20.0 secs2.1 se 12.6secs5.5 -6.9 17.0
01/3008:00:006.4 4.7 se18.0 secs2.4 se12.3 secs2.7 se 7.6secs6.8 -8.4 18.0
01/3007:00:005.8 3.7 se17.7 secs2.5 se12.2 secs1.8 se 9.1secs5.3 -6.6 17.7
01/3006:00:005.7 3.6 se17.6 secs2.4 se12.3 secs2.5 se 7.1secs5.1 -6.4 17.6
01/3005:00:005.5 4.0 se17.2 secs2.2 se12.4 secs2.4 se 6.7secs5.5 -6.8 17.2
01/3004:00:005.0 3.5 se16.7 secs2.2 se12.4 secs0.8 se 20.0secs4.7 -5.8 16.7
01/3003:00:005.2 3.9 se17.5 secs2.1 se12.4 secs1.3 se 9.2secs5.5 -6.8 17.5
01/3002:00:004.6 3.1 se16.9 secs2.3 se12.4 secs0.9 se 20.0secs4.2 -5.3 16.9
01/3001:00:005.1 3.6 se17.2 secs2.6 se12.5 secs1.7 se 9.2secs5.0 -6.3 17.2
01/3000:00:005.7 4.4 se18.0 secs2.7 se12.3 secs1.7 se 9.2secs6.3 -7.9 18.0
01/2923:00:004.8 3.3 se18.1 secs2.4 se11.2 secs1.3 se 7.8secs4.8 -6.0 18.1
01/2922:00:005.2 3.8 se17.4 secs2.8 se12.4 secs1.7 se 9.3secs5.3 -6.7 17.4
01/2921:00:004.5 2.6 se17.1 secs3.0 se12.4 secs1.6 se 9.2secs3.6 -4.5 17.1
01/2920:00:005.6 4.4 se18.4 secs3.6 se15.0 secs2.6 se 11.3secs6.5 -8.1 18.4
01/2919:00:005.0 3.7 se17.6 secs2.7 se12.4 secs1.6 se 9.4secs5.2 -6.4 17.6
01/2918:00:005.7 4.4 se18.5 secs3.5 se14.9 secs2.8 se 11.3secs6.4 -8.1 18.5
01/2917:00:004.5 2.4 se17.4 secs3.1 se12.3 secs1.4 se 9.3secs3.4 -4.2 17.4
01/2916:00:005.0 3.5 se17.8 secs2.8 se14.4 secs2.8 se 11.4secs5.0 -6.2 17.8

 

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
15:00:00 (GMT) on 01/30
Combined Sea Height:8.5 ft
Dominant Period:8.0 secs
Wind Speed: 13.7 kts
Wind Gust: 17.6 kts
Wind Direction:330 degrees
Barometric Pressure:1016.1 mbs
Air Temperature: 55.6 degrees
Water Temperature:58.3 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)
01/3015:00:008.58.013.717.63301016.155.658.3
01/3014:00:009.216.015.619.53301016.155.858.3
01/3013:00:007.916.017.621.43301016.255.958.3
01/3012:00:008.916.017.621.43301016.455.958.3
01/3011:00:007.57.019.523.43201016.855.958.3
01/3010:00:006.916.019.521.43301017.255.958.3
01/3009:00:007.917.017.621.43301017.655.958.3
01/3008:00:007.517.017.619.53301017.855.858.3
01/3007:00:008.217.017.621.43301018.055.958.3
01/3006:00:007.517.017.621.43301018.256.158.3
01/3005:00:007.517.017.621.43301018.156.558.5
01/3004:00:007.217.017.621.43301018.256.758.5
01/3003:00:006.617.017.621.43301018.556.558.5
01/3002:00:006.617.017.623.43301018.456.358.6
01/3001:00:006.217.017.621.43301018.256.858.6
01/3000:00:006.617.017.619.53201018.157.058.6
01/2923:00:006.917.017.619.53301018.156.858.8
01/2922:00:006.217.017.621.43301018.456.858.8
01/2921:00:006.217.019.523.43201018.656.758.8
01/2920:00:005.617.013.717.63301019.156.858.8
01/2919:00:006.619.013.715.63301020.157.258.8
01/2918:00:005.919.011.713.73401020.557.058.8
01/2917:00:006.619.011.713.73401020.557.058.8
01/2916:00:005.611.011.713.73501020.356.858.8

 

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