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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)04/25
03:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
03:00:00 (GMT) on 04/25
Sea Height:5.7 ft
Primary Swell Height: 4.4 ft
Primary Swell Period: 12.5 secs
Surf Height4.4 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)
04/2503:00:005.7 4.4 se12.5 secs2.4 se9.2 secs1.0 se 17.3secs4.4 -5.5 12.5
04/2502:00:005.5 4.0 se12.5 secs2.5 se15.9 secs2.5 se 9.3secs4.0 -5.1 12.5
04/2501:00:005.1 3.8 se12.5 secs2.3 se9.3 secs1.2 se 16.7secs3.8 -4.8 12.5
04/2500:00:004.6 3.5 se12.4 secs1.8 se15.9 secs2.1 se 9.2secs3.4 -4.3 12.4
04/2423:00:005.3 4.1 se13.9 secs2.6 se10.3 secs1.4 se 17.2secs4.6 -5.8 13.9
04/2422:00:004.7 3.5 se14.0 secs2.5 se10.3 secs1.2 se 7.2secs3.9 -4.8 14.0
04/2421:00:005.2 4.2 se12.4 secs1.9 se15.7 secs2.0 se 9.2secs4.2 -5.2 12.4
04/2420:00:005.5 4.4 se12.4 secs2.2 se9.3 secs1.1 se 16.7secs4.3 -5.4 12.4
04/2419:00:006.0 4.9 se12.6 secs2.5 se9.3 secs1.2 se 17.2secs4.9 -6.2 12.6
04/2418:00:006.4 5.2 se12.7 secs1.4 se17.5 secs2.5 se 9.3secs5.3 -6.6 12.7
04/2417:00:006.0 4.4 se13.9 secs3.0 se10.3 secs1.7 se 7.2secs4.9 -6.1 13.9
04/2416:00:005.9 4.5 se12.7 secs2.8 se9.2 secs1.4 se 17.1secs4.5 -5.6 12.7
04/2415:00:006.5 5.5 se12.7 secs1.4 se17.4 secs2.2 se 9.1secs5.6 -7.0 12.7
04/2414:00:006.2 4.9 se12.8 secs1.6 se16.7 secs2.7 se 9.3secs5.0 -6.3 12.8
04/2413:00:006.9 5.8 se12.7 secs1.6 se16.7 secs2.6 se 9.2secs5.9 -7.4 12.7
04/2412:00:007.3 6.3 se12.5 secs2.8 se9.3 secs1.3 se 17.4secs6.3 -7.9 12.5
04/2411:00:007.9 6.9 se12.5 secs3.5 se15.5 secs2.6 se 9.3secs6.9 -8.7 12.5
04/2410:00:008.8 7.9 se12.5 secs1.5 se17.5 secs2.5 se 9.3secs7.9 -9.9 12.5
04/2409:00:008.6 7.5 se12.5 secs2.8 se9.3 secs1.4 se 16.7secs7.5 -9.4 12.5
04/2408:00:009.2 8.1 se12.7 secs1.9 se16.7 secs2.8 se 9.3secs8.2 -10.3 12.7
04/2407:00:009.5 8.9 se12.7 secs2.1 se9.3 secs0.8 se 16.7secs9.0 -11.3 12.7
04/2406:00:008.6 7.7 se12.8 secs1.5 se16.7 secs2.2 se 9.3secs7.9 -9.9 12.8
04/2405:00:007.5 6.1 se14.0 secs3.3 se10.5 secs1.8 se 17.2secs6.8 -8.5 14.0
04/2404:00:007.1 5.7 se14.3 secs3.3 se10.4 secs1.9 se 5.6secs6.5 -8.1 14.3

 

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
03:00:00 (GMT) on 04/25
Combined Sea Height:7.2 ft
Dominant Period:11.0 secs
Wind Speed: 13.7 kts
Wind Gust: 15.6 kts
Wind Direction:320 degrees
Barometric Pressure:1018.1 mbs
Air Temperature: 55.4 degrees
Water Temperature:56.3 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)
04/2503:00:007.211.013.715.63201018.155.456.3
04/2502:00:006.912.013.717.63201017.955.956.8
04/2501:00:006.611.011.715.63001018.056.557.2
04/2500:00:006.212.011.715.63101018.056.557.4
04/2423:00:005.612.011.713.72901018.156.557.6
04/2422:00:006.213.011.713.72901018.755.957.2
04/2421:00:005.913.011.713.72801018.855.857.6
04/2420:00:006.212.07.87.82401018.756.157.4
04/2419:00:006.911.05.87.82401018.956.357.0
04/2418:00:007.513.07.89.82901019.455.256.8
04/2417:00:007.514.05.89.82401019.154.956.8
04/2416:00:007.213.05.87.82301018.654.956.7
04/2415:00:007.214.09.813.72701018.254.756.7
04/2414:00:007.513.07.89.82701017.656.156.7
04/2413:00:007.514.05.87.82901017.355.656.7
04/2412:00:008.214.07.89.83001017.255.656.7
04/2411:00:008.512.09.811.73001017.255.256.8
04/2410:00:009.212.013.717.63001016.955.056.8
04/2409:00:0010.213.015.617.63101016.855.056.7
04/2408:00:009.811.015.619.53001016.955.256.8
04/2407:00:0010.814.017.621.43001017.055.257.0
04/2406:00:0010.813.019.523.43001017.055.057.0
04/2405:00:009.814.019.523.43001017.255.257.4
04/2404:00:008.914.019.525.43001017.355.457.4

 

000149277 ___0.178141
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