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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)11/21
17:00:00
 Wait ...
 Historical Surf Height...Time Lapse Spectral Density... Primary Swell Profile
      

 

Current Swell & Surf Analysis
Buoy 46012
17:00:00 (GMT) on 11/21
Sea Height:3.7 ft
Primary Swell Height: 3.3 ft
Primary Swell Period: 12.4 secs
Surf Height3.2 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)
11/2117:00:003.7 3.3 se12.4 secs1.3 se9.3 secs0.7 se 16.7secs3.2 -4.1 12.4
11/2116:00:004.2 3.6 se12.4 secs1.6 se9.3 secs0.8 se 16.7secs3.6 -4.5 12.4
11/2115:00:004.2 3.7 se12.4 secs0.9 se16.7 secs1.3 se 9.2secs3.7 -4.6 12.4
11/2114:00:004.8 4.2 se12.3 secs1.9 se15.9 secs1.8 se 9.3secs4.1 -5.1 12.3
11/2113:00:004.9 4.6 se12.5 secs1.4 se9.4 secs0.7 se 16.7secs4.6 -5.8 12.5
11/2112:00:004.0 3.4 se12.6 secs1.7 se9.5 secs0.8 se 17.6secs3.5 -4.3 12.6
11/2111:00:004.5 4.0 se12.5 secs2.0 se15.5 secs0.9 se 8.5secs4.0 -5.0 12.5
11/2110:00:005.0 4.6 se12.3 secs2.1 se15.6 secs0.8 se 8.5secs4.5 -5.6 12.3
11/2109:00:004.5 4.2 se12.4 secs0.7 se16.7 secs1.1 se 9.3secs4.2 -5.2 12.4
11/2108:00:004.2 4.0 se12.5 secs0.7 se16.7 secs1.0 se 9.4secs4.0 -5.0 12.5
11/2107:00:004.7 4.4 se12.5 secs0.8 se16.7 secs1.3 se 9.4secs4.4 -5.5 12.5
11/2106:00:004.3 4.0 se12.4 secs0.9 se16.7 secs1.1 se 9.4secs4.0 -5.0 12.4
11/2105:00:005.0 4.7 se12.6 secs0.8 se17.8 secs1.0 se 9.4secs4.8 -6.0 12.6
11/2104:00:004.6 4.0 se13.6 secs2.0 se10.5 secs0.9 se 16.7secs4.4 -5.5 13.6
11/2103:00:005.1 4.9 se12.5 secs0.9 se16.7 secs0.5 se 8.4secs4.8 -6.1 12.5
11/2102:00:004.2 3.9 se12.6 secs2.2 se15.7 secs1.1 se 9.5secs3.9 -4.9 12.6
11/2101:00:004.3 4.0 se12.6 secs1.1 se17.4 secs0.9 se 9.4secs4.0 -5.0 12.6
11/2100:00:003.9 3.6 se12.6 secs1.0 se17.2 secs0.9 se 9.5secs3.6 -4.5 12.6
11/2023:00:003.1 2.8 se12.6 secs0.7 se16.7 secs1.0 se 9.4secs2.8 -3.5 12.6
11/2022:00:003.8 3.6 se12.5 secs0.8 se16.7 secs0.8 se 9.4secs3.6 -4.4 12.5
11/2021:00:003.7 3.5 se12.6 secs0.8 se16.7 secs0.8 se 9.4secs3.5 -4.4 12.6
11/2020:00:003.5 2.9 se14.3 secs1.9 se10.6 secs0.1 se 20.0secs3.3 -4.2 14.3
11/2019:00:003.3 3.1 se12.3 secs1.5 se15.5 secs0.4 se 8.5secs3.1 -3.8 12.3
11/2018:00:002.7 2.3 se14.1 secs1.3 se10.5 secs0.1 se 20.0secs2.6 -3.2 14.1

 

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
16:00:00 (GMT) on 11/21
Combined Sea Height:4.3 ft
Dominant Period:11.0 secs
Wind Speed: 3.9 kts
Wind Gust: 3.9 kts
Wind Direction:050 degrees
Barometric Pressure:1020.0 mbs
Air Temperature: 59.5 degrees
Water Temperature:58.6 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)
11/2116:00:004.311.03.93.90501020.059.558.6
11/2115:00:004.912.03.95.80701019.960.458.6
11/2114:00:004.912.03.95.83601019.758.858.6
11/2113:00:005.611.03.95.83201019.258.858.6
11/2112:00:005.212.01.91.92701018.759.758.8
11/2111:00:004.611.01.93.90201018.560.458.8
11/2110:00:004.912.03.93.90201018.659.258.8
11/2109:00:005.611.03.95.80401018.659.258.8
11/2108:00:004.913.05.85.80401019.058.859.0
11/2107:00:004.612.03.95.80601019.259.059.0
11/2106:00:005.212.05.87.80801019.359.059.0
11/2105:00:004.912.05.87.80801019.259.058.8
11/2104:00:005.612.03.95.81701018.859.258.8
11/2103:00:005.213.05.85.82201019.059.258.8
11/2102:00:005.612.03.95.82001018.459.058.8
11/2101:00:004.913.07.89.81501017.958.859.0
11/2100:00:004.912.09.811.71501018.158.559.0
11/2023:00:004.612.07.89.81501018.158.659.2
11/2022:00:003.912.09.811.71501018.258.559.2
11/2021:00:004.312.011.711.71501018.158.359.2
11/2020:00:004.312.09.811.71601018.058.859.0
11/2019:00:003.912.09.811.71601018.659.459.0
11/2018:00:003.612.011.713.71701019.059.258.8
11/2017:00:003.012.011.713.71601018.559.558.8

 

000148429 ___0.495208
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