Station List

Station 46012 (LLNR 325) - HALF MOON BAY - 24NM SSW of San Francisco, CA Image indicating link to RSS feed of recent meteorological observations for station 46012

Owned and maintained by National Data Buoy Center
Data provided by @Orchard
Uncrewed Surface Vehicle
DataXplorer
37.356 N 122.881 W (37°21'20" N 122°52'51" W)

Site elevation: sea level
Air temp height: 1.3 m above site elevation
Anemometer height: 1.3 m above site elevation
Barometer elevation: 1.3 m above mean sea level
Sea temp depth: 0.2 m below MLLW
Water depth: 208.8 m
Watch circle radius: 20253.7 yards

Previous data provided by Saildrone for this station are available at:
SD-1073 (1801589) -- 0000Z, 9/1/23 to 2359Z, 4/25/24 and 2000Z, 5/8/25 to 0000Z, 8/4/25
SD-1077 (1801593) -- 1200Z, 7/27/24 to 1959Z, 5/8/25
SD-1063 (1801583) -- 0000Z, 4/26/24 to 0330Z, 7/24/24.

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Search And Rescue (SAR) Data

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station 46012

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Station 46012

Conditions at 46012 as of
(3:00 pm PDT)
2200 GMT on 07/04/2026:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Wind Direction Wind Direction (WDIR): W ( 270 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 3.9 kts
5-day plot - Wind Gust Wind Gust (GST): 5.8 kts
5-day plot - Wave Height Wave Height (WVHT): 3.9 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 8 sec
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES):30.05 in
5-day plot - Pressure Tendency Pressure Tendency (PTDY):-0.02 in ( Falling )
5-day plot - Air Temperature Air Temperature (ATMP): 55.8 °F
5-day plot - Water Temperature Water Temperature (WTMP): 57.4 °F
5-day plot - Dew Point Dew Point (DEWP): 54.0 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 5.8 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 5.8 kts
5-day plot - Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Previous observations
TIME
(PDT)		 5-day plot - Wind Direction
WDIR
 		 5-day plot - Wind Speed
WSPD
kts		 5-day plot - Wind Gust
GST
kts		 5-day plot - Wave Height
WVHT
ft		 5-day plot - Dominant Wave Period
DPD
sec		 5-day plot - Average Wave Period
APD
sec		 5-day plot - Mean Wave Direction
MWD
 		 5-day plot - Atmospheric Pressure
PRES
in		 5-day plot - Pressure Tendency
PTDY
in		 5-day plot - Air Temperature
ATMP
°F		 5-day plot - Water Temperature
WTMP
°F		 5-day plot - Dew Point
DEWP
°F		 5-day plot - Salinity
SAL
psu		 5-day plot - Visibility
VIS
nmi		 5-day plot - Tide (above MLLW)
TIDE
ft
2026-07-04 02:00 pm W 5.8 7.8 3.9 9--30.06+0.00 55.0 57.0 53.4---
2026-07-04 01:00 pm W 5.8 7.8 4.3 7--30.07+0.00 54.9 56.8 53.6---
2026-07-04 12:00 pm W 5.8 7.8 4.3 7--30.07+0.02 54.9 56.8 53.8---
2026-07-04 11:00 amWSW 3.9 5.8 3.9 8--30.07+0.02 54.9 56.5 53.8---
2026-07-04 10:00 am W 5.8 5.8 3.3 10--30.06+0.02 54.7 56.7 53.6---
2026-07-04 09:00 am W 5.8 7.8 3.9 8--30.05+0.02 54.3 56.5 53.4---
2026-07-04 08:00 am W 3.9 5.8 4.3 10--30.05+0.01 54.3 56.3 53.6---
2026-07-04 07:00 am W 3.9 5.8 3.9 7--30.04+0.02 54.3 56.3 53.4---
2026-07-04 06:00 amWNW 3.9 5.8 3.9 10--30.03+0.00 54.5 56.3 53.6---
2026-07-04 05:00 am W 3.9 3.9 3.9 7--30.03-0.01 54.3 56.5 53.4---
2026-07-04 04:00 am SW 1.9 3.9 3.6 9--30.03-0.02 54.1 56.7 53.2---
2026-07-04 03:00 am W 3.9 5.8 3.9 8--30.03-0.02 54.1 56.7 53.2---
2026-07-04 02:00 am W 1.9 3.9 3.6 8--30.04-0.01 54.0 56.7 53.2---
2026-07-04 01:00 am W 3.9 5.8 3.3 9--30.05+0.01 53.8 56.8 53.1---
2026-07-04 12:00 am W 3.9 5.8 3.6 10--30.05+0.02 53.4 57.0 52.7---
2026-07-03 11:00 pm W 3.9 5.8 3.3 12--30.05+0.02 53.2 57.2 52.7---
2026-07-03 10:00 pm W 3.9 5.8 3.0 9--30.04+0.02 54.0 57.2 53.1---
2026-07-03 09:00 pmWNW 5.8 5.8 3.0 13--30.03+0.01 54.1 57.6 53.1---
2026-07-03 08:00 pm W 3.9 5.8 3.0 8--30.03+0.00 54.3 57.9 52.9---
2026-07-03 07:00 pmWSW 3.9 5.8 3.0 7--30.02-0.01 54.9 58.1 53.1---
2026-07-03 06:00 pm SW 5.8 5.8 3.0 11--30.01-0.01 55.8 57.7 53.8---
2026-07-03 05:00 pmSSW 5.8 7.8 3.3 9--30.02-0.01 56.7 57.2 54.3---
2026-07-03 04:00 pmSSW 5.8 7.8 3.6 8--30.03-0.01 56.3 57.4 54.0---
Wave Summary
for 46012 as of (3:00 pm PDT)
2200 GMT on 07/04/2026:

These wave data are displayed in rounded times.

     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Significant Wave Height Significant Wave Height (WVHT): 3.9 ft
5-day plot - Wave Steepness Wave Steepness (STEEPNESS): AVERAGE
Previous observations
TIME
(PDT)		 5-day plot - Wave Height
WVHT
ft		 5-day plot - Swell Height
SwH
ft		 5-day plot - Swell Period
SwP
sec		 5-day plot - Swell Direction
SwD
 		 5-day plot - Wind Wave Height
WWH
ft		 5-day plot - Wind Wave Period
WWP
sec		 5-day plot - Wind Wave Direction
WWD
 		 5-day plot - Wave Steepness
STEEPNESS
 		 5-day plot - Average Wave Period
APD
sec
2026-07-04 02:00 pm 3.9--N/A-- N/A N/A-
2026-07-04 01:00 pm 4.3--N/A-- N/A AVERAGE-
2026-07-04 12:00 pm 4.3--N/A-- N/A AVERAGE-
2026-07-04 11:00 am 3.6--N/A-- N/A AVERAGE-
2026-07-04 10:00 am 3.3--N/A-- N/A N/A-
2026-07-04 09:00 am 3.9--N/A-- N/A AVERAGE-
2026-07-04 08:00 am 4.3--N/A-- N/A N/A-
2026-07-04 07:00 am 3.9--N/A-- N/A AVERAGE-
2026-07-04 06:00 am 3.9--N/A-- N/A N/A-
2026-07-04 05:00 am 3.9--N/A-- N/A AVERAGE-
2026-07-04 04:00 am 3.6--N/A-- N/A N/A-
2026-07-04 03:00 am 3.9--N/A-- N/A AVERAGE-
2026-07-04 02:00 am 3.6--N/A-- N/A AVERAGE-
2026-07-04 01:00 am 3.3--N/A-- N/A N/A-
2026-07-04 12:00 am 3.6--N/A-- N/A N/A-
2026-07-03 11:00 pm 3.0--N/A-- N/A N/A-
2026-07-03 10:00 pm 3.0--N/A-- N/A N/A-
2026-07-03 09:00 pm 3.0--N/A-- N/A N/A-
2026-07-03 08:00 pm 3.0--N/A-- N/A N/A-
2026-07-03 07:00 pm 3.0--N/A-- N/A AVERAGE-
2026-07-03 06:00 pm 3.0--N/A-- N/A N/A-
2026-07-03 05:00 pm 3.3--N/A-- N/A N/A-
2026-07-03 04:00 pm 3.6--N/A-- N/A AVERAGE-