San Francisco Bay OFS

Last cycle 15 Oct 21:00 UTC

sfbofs

Fine unstructured-mesh FVCOM forecast for San Francisco Bay and the Sacramento–San Joaquin Delta, capturing complex bathymetry and channels.

Model FVCOMGrid UGRID (unstructured)Region US West CoastExtent −123.0228, 37.4275 → −121.6791, 38.2125

Produced by NOAA NOS CO-OPS

Coverage

Jul 28 – Oct 17

Cadence

Forecast

48h

Variables

Grid

UGRID

Vertical

20σ-layers

Coveragetime

span 2.7 months42 h ahead

now

Jul 28, 2026 09:00ZOct 17, 2026 21:00Z

Access

ZarrAvailable

Zarr store on S3 — open directly for best performance.

s3://noaa-nodd-kerchunk-pds/zarr3/sfbofs.zarr

WMSAvailable

Rendered map tiles for Leaflet, OpenLayers, QGIS.

https://cloud.data.ioos.us/xreds/datasets/sfbofs_zarr3/wms/?service=WMS&request=GetCapabilities

Open in code

python

import xarray as xr

ds = xr.open_zarr(
    "s3://noaa-nodd-kerchunk-pds/zarr3/sfbofs.zarr",
    zarr_format=3,
    consolidated=False,
    storage_options={"anon": True},
)

San Francisco Bay OFS · Zarr v3, anonymous S3

import intake

cat = intake.open_catalog(
    "https://noaa-nodd-kerchunk-pds.s3.amazonaws.com/zarr3/intake.yml",
)
ds = cat["sfbofs"].to_dask()

San Francisco Bay OFS · resolved through the shared catalog

Dimensions9

four4nele102,264node54,120time1,840three3maxelem9maxnode11siglay-1 → 0siglev-1 → 0

Variables42

name	standard name	units	dimensions
temp	sea_water_temperature	degrees_C	timesiglaynode
salinity	sea_water_salinity	1e-3	timesiglaynode
u	eastward_sea_water_velocity	meters s-1	timesiglaynele
v	Northward_sea_water_velocity	meters s-1	timesiglaynele
zeta	sea_surface_height_above_geoid	meters	timenode
uwind_speed	eastward wind	meters s-1	timenele
vwind_speed	northward wind	meters s-1	timenele
atmos_press	not declared	pascals	timenode
a2u	not declared	—	fournele
art1	not declared	—	node
a1u	not declared	—	fournele
awy	not declared	—	threenele
iint	not declared	—	time
h	sea_floor_depth_below_geoid	m	node
aw0	not declared	—	threenele
awx	not declared	—	threenele
inundation_cells	not declared	—	timenele
latent_heat_flux	not declared	W m-2	timenode
long_wave	not declared	W m-2	timenode
art2	not declared	—	node
Times	not declared	—	time
nbe	not declared	—	threenele
nbve	not declared	—	maxelemnode
nbsn	not declared	—	maxnodenode
net_heat_flux	not declared	W m-2	timenode
nprocs	not declared	—
nv	not declared	—	threenele
partition	not declared	—	nele
ntsn	not declared	—	node
ntve	not declared	—	node
short_wave	not declared	W m-2	timenode
sensible_heat_flux	not declared	W m-2	timenode
tauc	not declared	m^2 s^-2	timenele
wet_cells_prev_ext	not declared	—	timenele
wet_nodes_prev_int	not declared	—	timenode
wet_cells	not declared	—	timenele
wet_cells_prev_int	not declared	—	timenele
xc	not declared	meters	nele
x	not declared	meters	node
y	not declared	meters	node
wet_nodes	not declared	—	timenode
yc	not declared	meters	nele

Attributes15

title

SFBOFS

institution

School for Marine Science and Technology

source

FVCOM_4.4.7

history

model started at: 15/10/2026 21:31

references

http://fvcom.smast.umassd.edu, https://github.com/FVCOM-GitHub/FVCOM

Conventions

CF-1.0

CoordinateSystem

GeoReferenced

CoordinateProjection

init=nad83:402

Tidal_Forcing

Tidal Forcing Time Series Title: sfbofs lateral open boundary netCDF file

River_Forcing

THERE ARE 9 RIVERS IN THIS MODEL. RIVER INFLOW IS ON THE nodes WHERE TEMPERATURE AND SALINITY ARE calculated IN THE MODEL. THE FOLLOWING RIVER NAMES ARE USED: 11459150 11180700 11458000 11458000 11458000 11458000 11458000 11172175 11169025

GroundWater_Forcing

GROUND WATER FORCING IS OFF!

Surface_Heat_Forcing

FVCOM variable surface heat forcing file: FILE NAME:sfbofs.t21z.20261015.hflux.nowcast.nc SOURCE:FVCOM grid (unstructured) surface forcing Unknown start date meta data format

Surface_Wind_Forcing

FVCOM variable surface Wind forcing: FILE NAME:sfbofs.t21z.20261015.met.nowcast.nc SOURCE:FVCOM grid (unstructured) surface forcing Unknown start date meta data format

Surface_PrecipEvap_Forcing

SURFACE PRECIPITATION FORCING IS OFF

_xpublish_id

sfbofs_zarr3

Source & extent

Model core

FVCOM

Grid type

UGRID (unstructured)

Region

US West Coast

Spatial extent

−123.0228, 37.4275 → −121.6791, 38.2125

Store format

Zarr v3

Source store

s3://noaa-nodd-kerchunk-pds/zarr3/sfbofs.zarr