v5

latestOpenAPI 3.1.0Proprietary2026-08-031,5423,1505.5 MB

Environment

Tidal harmonic constituents

Published harmonic constituents for a CO-OPS station - 37 classical tidal constituents including M2, S2, N2, K1, O1, M4, K2, and others - with amplitude, phase (GMT and local), and angular speed. These are the inputs the prediction engine uses to synthesize tide levels, and are published so downstream researchers can reproduce predictions independently. Attribution: NOAA CO-OPS Tides and Currents (api.tidesandcurrents.noaa.gov).

get/api/v1/environment/noaa-tides/station/{id}/harmonic-constituents

Path parameters

idstring required

7-digit CO-OPS station identifier.

Response

Harmonic constituents table with amplitude, phase, and speed.

Example response

{
  "meta": {
    "endpoint": "/api/v1/fred/us/cpi",
    "data_time": "2026-04-16T14:30:00Z",
    "response_time": "2026-04-16T14:30:12Z",
    "provider": "Sugra API v1.0.1",
    "source": "sugra_crypto",
    "attribution": "Short interest and Reg SHO daily short volume data is owned by and sourced from FINRA (Financial Industry Regulatory Authority).",
    "fallback_chain": [
      "sugra_crypto",
      "sugra_finance"
    ]
  }
}