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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)09/24
18:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
18:00:00 (GMT) on 09/24
Sea Height:2.8 ft
Primary Swell Height: 1.4 ft
Primary Swell Period: 17.1 secs
Surf Height1.9 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)
09/2418:00:002.8 1.4 se17.1 secs1.2 se12.6 secs1.7 se 7.7secs1.9 -2.4 17.1
09/2417:00:003.1 1.4 se17.3 secs1.1 se12.5 secs1.8 se 7.8secs2.0 -2.5 17.3
09/2416:00:003.3 1.9 se17.4 secs1.2 se12.6 secs1.8 se 7.7secs2.6 -3.3 17.4
09/2415:00:003.5 1.7 se18.3 secs1.6 se14.8 secs1.5 se 11.2secs2.6 -3.2 18.3
09/2414:00:003.1 1.2 se16.9 secs1.3 se12.6 secs1.9 se 7.8secs1.6 -2.1 16.9
09/2413:00:003.2 1.8 se17.5 secs1.3 se12.7 secs1.6 se 7.7secs2.6 -3.2 17.5
09/2412:00:003.6 1.6 se17.4 secs1.6 se12.4 secs1.9 se 8.3secs2.2 -2.8 17.4
09/2411:00:003.2 1.4 se17.2 secs1.5 se12.5 secs1.5 se 9.1secs1.9 -2.4 17.2
09/2410:00:003.2 1.2 se17.1 secs1.3 se12.4 secs1.8 se 7.7secs1.6 -2.0 17.1
09/2409:00:002.9 1.3 se19.2 secs1.2 se14.4 secs1.4 se 11.3secs2.0 -2.5 19.2
09/2408:00:003.2 1.8 se17.5 secs1.5 se12.5 secs1.2 se 9.2secs2.5 -3.1 17.5
09/2407:00:003.0 1.1 se17.6 secs1.4 se12.2 secs1.7 se 7.2secs1.6 -2.0 17.6
09/2406:00:002.6 1.5 se12.4 secs1.0 se16.7 secs0.5 se 20.0secs1.5 -1.8 12.4
09/2405:00:003.1 1.5 se17.5 secs1.5 se14.3 secs1.4 se 10.3secs2.1 -2.7 17.5
09/2404:00:002.7 1.1 se17.2 secs1.5 se12.4 secs1.3 se 7.2secs1.6 -2.0 17.2
09/2403:00:002.7 1.6 se12.5 secs1.0 se15.7 secs1.4 se 6.7secs1.6 -2.1 12.5
09/2402:00:002.9 1.7 se12.5 secs1.3 se16.9 secs0.7 se 20.0secs1.7 -2.1 12.5
09/2401:00:002.7 1.6 se12.2 secs0.7 se15.5 secs1.3 se 6.6secs1.5 -1.9 12.2
09/2400:00:002.8 1.7 se12.4 secs1.4 se6.7 secs0.0 se 0.0secs1.7 -2.1 12.4
09/2323:00:003.0 1.9 se12.3 secs1.0 se16.9 secs0.6 se 20.0secs1.9 -2.4 12.3
09/2322:00:002.8 1.5 se12.4 secs1.6 se6.3 secs0.3 se 16.7secs1.5 -1.9 12.4
09/2321:00:003.1 2.1 se12.5 secs1.1 se9.3 secs1.4 se 5.9secs2.1 -2.6 12.5
09/2320:00:003.1 2.0 se12.4 secs1.1 se16.4 secs1.7 se 6.7secs2.0 -2.5 12.4
09/2319:00:003.0 2.0 se12.2 secs0.7 se16.2 secs1.5 se 6.6secs2.0 -2.5 12.2

 

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
18:00:00 (GMT) on 09/24
Combined Sea Height:4.3 ft
Dominant Period:8.0 secs
Wind Speed: 1.9 kts
Wind Gust: 3.9 kts
Wind Direction:220 degrees
Barometric Pressure:1018.4 mbs
Air Temperature: 61.5 degrees
Water Temperature:32.0 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)
09/2418:00:004.38.01.93.92201018.461.532.0
09/2417:00:004.68.00.01.90001018.361.532.0
09/2416:00:004.617.01.93.93101017.860.632.0
09/2415:00:000.00.05.87.83301016.460.132.0
09/2414:00:004.68.05.87.83301016.360.132.0
09/2413:00:000.00.05.87.83301015.460.132.0
09/2412:00:004.98.05.87.83301015.460.132.0
09/2411:00:000.00.07.89.83301015.160.332.0
09/2410:00:004.67.07.89.83301015.060.332.0
09/2409:00:004.37.09.811.73301015.160.432.0
09/2408:00:000.00.09.811.73401015.260.432.0
09/2407:00:000.00.09.813.73401015.060.632.0
09/2406:00:004.311.09.813.73401015.160.632.0
09/2405:00:000.00.013.715.63401015.160.632.0
09/2404:00:004.65.013.715.63401015.160.632.0
09/2403:00:000.00.015.619.53301014.359.532.0
09/2402:00:004.96.015.619.53301014.359.532.0
09/2401:00:000.00.017.621.43301014.159.032.0
09/2400:00:004.66.017.621.43201014.059.232.0
09/2323:00:004.611.015.619.53301014.060.132.0
09/2322:00:004.67.015.619.53201014.559.232.0
09/2321:00:004.613.015.619.53201014.859.232.0
09/2320:00:000.00.013.717.63201015.761.232.0
09/2319:00:004.311.013.717.63201015.861.232.0

 

000182486 ___0.033051
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