Near-real-time surface ocean velocities derived from HF-radar stations located along coastal waters of North Slope Alaska, Gulf of Alaska, Puerto Rico/Virgin Islands, eastern U.S./Gulf of America, Hawaii, Great Lakes, and western U.S.

This dataset contains near-real-time ocean surface velocities, also known as total vector velocities, derived from high-frequency (HF) radar stations. The velocities are arranged in a horizontal latitude/longitude grid. Measured velocities are indicative of the upper 0.3 - 2.5 meters of the ocean depending on the operating frequency of the HF-radar and the vertical velocity profile of the water column. Data files are in NetCDF format following the CF (Climate and Forecast) Metadata Conventions. Velocities are reported in CF variables surface_eastward_sea_water_velocity and surface_northward_sea_water_velocity.

The National Data Buoy Center (NDBC) â in collaboration with the Scripps Institution of Oceanography through June 2025 and thereafter with NOAAâs National Environmental Satellite, Data, and Information Service (NESDIS) â assembles the data from the Integrated Ocean Observing System (IOOS) Surface Currents Programâs HF-Radar National Network and submits the data on a monthly basis to NOAAâs National Centers for Environmental Information (NCEI).

Remote sensing of ocean surface velocity from shore-based HF-radar sensors bridges the operational observational gap between point samples obtained from in-situ sampling and synoptic scale relatively low resolution data obtained from satellites by providing continuous mesoscale coverage at relatively high resolution near the coast.

Tags: aci1 - anacapa island, agl1 - pt. arguello, ak, al, amag - amagansett, anahuac, angl - angel island, anwr - aransas national wildlife refuge, arg1 - pt. arguello, assa - assateague, b.c., basc - barrow, bc, belm - belmar, bigc - big creek, bisl - block island, blck - block island, bml1 - bodega marine laboratory, bmlr - bodega marine laboratory long range, bolinas, boni - bonilla island, border park, bp01 - san diego, bpat - bp rig atlantis, bpth - bp rig thunder horse, brad - bradley beach, brag - fort bragg, brig - brigantine, brmr - brigantine, brnt - brant beach, brvw - bridgeview park, brzy - breezy point, ca, california, canada, cape - cape shore lab, cape charles, cat - st. catherine's, cbbt - chesapeake bay bridge tunnel, cbl1 - cape blanco, ccb1 - north beach, ccb2 - university beach, cddo - cabo rojo, cdn - crandon, cedr - cedar island, clhb - clarke's harbour, clmh - clam harbour, club - cape may point, cmpt - cape may point, cns - canaveral national seashore, comm - commonweal center, con - conalep, cona - conalep, cook inlet, cop1 - coal oil pt., core - core banks, coronado islands, corpus christi bay, cphn - cape henry, cplf - chevron pipeline facility, cpvn - camp varnum, cris - crissy field, cstm - cape st. mary, csw - fort caswell, ct, dclr - diablo canyon long range, dcsr - diablo canyon standard range, de, depth, duck - duck, ere - erendira, erra - low beach, espt - eastern point retreat house, estr - point estero, expl - the exploratorium museum, fajardo, faro - cabo rojo lighthouse at cabo rojo, fbk1 - fallback22, fds - ft. de soto, fl, flnd - first landing state park, focf - fourth cliff recreation area, fort - fort funston, frdo - reserva natural cabezas de san juan, ftmk - fort michilimackinac, fura - anasco, ga, gcap - great captain island, gcve - gerstle cove, gcyn - granite canyon, gmnb - grand manan, gptp - gulfport, grni - green's island, gtn - georgetown, gulf of mexico, haty - cape hatteras, haul - haulover inlet, hbsp - henderson beach state park, hbsr - horseneck beach state reserve, hecate strait, hemp - hempstead, hi, hill - hillsboro, hlgt - holgate, hlpn - cape henlopen, homr - sandy hook, hook - sandy hook, hosr - sandy hook, htr - hightower beach, icyc - icy cape, jeff - ft jefferson, jek - jekyll island, jenn - jennettes pier, kak - kaka'ako, kal - kalaeloa, kap - kapolei, kbch - kalifornsky beach, kenai, king - briscoe king pavilion, kkh - keaukaha, kna - kaena, kok - koko head, ksc - kennedy space center, la, latitude, lend - land's end, lewe - lewes, lisl - little island park, longitude, loo1 - loomis lake, look - point lookout, lopt - lockport, love - loveladies, lpwr - long point wildlife refuge, luis - point san luis, ma, mabo - punta tuna lighthouse, maine, man1 - manhattan beach, mara - marathon, mata - matagorda island, maunabo, mbac - monterey bay academy, mbnp - matagorda bay nature park, mbp - myrtle beach state park, mcpk - mccollum park beach city, md, me, metl - metal magic, mets - mvco meteorological mast, mexico, mgs1 - mandalay generating station, mi, misq - misquamicut, mlml - moss landing marine laboratories, mntk - montauk, mola - moses lake floodgate, mont - montara sanitary district, montara, mrch - moriches, ms, mvco - martha's vineyard, nant - nantucket island, nantucket, napl - naples, naus - nauset, nb, nc, new york, nic1 - nicholas canyon, nj, nkl - north key largo, npgs - naval postgraduate school, ns, number_of_observations, nwtp - nantucket, ny, obsp - orange beach state park, oceanography, ocra - ocracoke island, okko - steve okkonen's house, oldb - old bridge waterfront park, or, ospy - osprey drilling platform, pacific grove, pafs - point arena field station, pbon - point bonita, pbrw - point barrow, pcyc - pass christian yacht club, pesc - pescadero, pilr - pillar point air force station, pins - padre island, pla8 - placement 8, plpi - pleasure pier blvd, pmgc - port mansfield gerg codar, point loma, popb - popham beach state park, port - port monmouth, port arthur, ppk - pepe'ekeo, ppns - point pinos, prey - point reyes, pri - pritchard's island, prince rupert, psg1 - point st. george, pslr - point sur long range, psur - point sur, pt. sal, ptc1 - point conception, ptly - point lay, ptm1 - point mugu, ptwn - provincetown, puerto rico, pyfc - ponce yacht and fishing club at ponce, qta - quinta, ragg - ragged point, rath - strathmere, rdsr - reddington, rfg1 - refugio state beach, ri, rlvr - rollover pass, rtc1 - romberg tiburon center, salt point state park, samoa, san diego, san juan bay, sand - sandspit, sarb - sargent beach, sau - sauzal, saus - sausalito-marin city sanitary district, sbay - club de pesca rec isla de cabras, sbsr - salisbury beach state reservation, sc, scci - catalina island, scdb - dan blocker, scdh - dockweiler headquarters, sci1 - santa cruz island, scnb - newport beach, scov - sandy cove, scpf - point fermin, scripps long-range, scripps pier, scrz - santa cruz, sctb - torrance beach, sdbp - san diego, sdci - san diego, sdcp - camp pendleton, sddp - dana point, sdpd - susan dionne pad, sdpl - san diego, sdsc - san clemente is, sdse - san elijo state beach, sdsl - san diego, sdsm - san mateo point, sdsn - san clemente island north, sdut - upper trestles, sdww - point loma waste water treatment plant, sea1 - seaside, seab - sea bright, sgrv - singing river, shel - shelter cove, sild - staten island, simp - cape simpson, sisl - silver slipper casino, slid - slide ranch, sltr - slaughter beach, smoa - humboldt bay, smpt - smith point, sni1 - san nicolas island, sonoma county, sprk - seaside park, squb - squibnocket farms, ssd1 - summerland sanitary district, ssde - surfside, stf - dania beach, stli - stehli beach, stv2 - fort stevens, suns - sunset beach resort, surface_eastward_sea_water_velocity, surface_northward_sea_water_velocity, swpp - southwest pass, texas city, thom - st. thomas, time, tlsp - two lights state park, tres - treasure island, trin - trinidad, trl1 - null, trs - treasure shores, tsawwassen, tx, tx (pla8), tx (plpi), tx (smpt), usa, usvi, va, vancouver, vatk - point atkinson, vcol - westshore coal terminal, vdig - digby island, vdig - idigby island, ven - venice, veni - venice, vgpt - georgina point, view - ocean view beach, vil - villarino, vion - iona wastewater treatment plant, vir - virginia key, vjor - jordan river, vrid - ridley island, vroc - race rocks, vspt - iona jetty, wa, wain - wainwright, wcdn - crandon, west - key west, west vancouver, wild - wildwood, win1 - winchester bay, wld2 - waldport, wnkl - north key largo, wood - north wildwood, wsh1 - washburne, wsp1 - westport state park, yhl1 - yaquina head long, yhs2 - yaquina head south
Organization: National Oceanic and Atmospheric Administration, Department of Commerce