Founder · Software engineer · Author

Ryan Cardin

Ryan Cardin is the founder of Cardin Labs and the software engineer who builds and maintains Perigee Tides. He publishes Perigee's cited explainers and reproducible NOAA-derived reports, and owns their implementation, documentation, and correction process.

Role at Perigee

Ryan develops Perigee's public website, tide and astronomy data products, REST API, and hosted MCP tools. His role is to make official coastal data easier to retrieve and interpret without obscuring where it came from or what it can and cannot prove.

Perigee is independent and is not NOAA or the National Weather Service. Ryan is not presented as the upstream scientific authority: predictions, observations, station metadata, thresholds, and marine forecasts remain attributed to their named government sources.

How guides and reports are produced

Definitions and scientific limits are anchored to primary NOAA, NWS, and other responsible-agency sources linked on the page.
Original reports publish their station cohort, calculation method, completeness rules, source URLs, and reusable CSV output.
Tide predictions remain distinct from observed water levels, and tide height remains distinct from tidal current.
Missing or delayed source data is disclosed instead of being turned into a favorable planning conclusion.

Corrections and contact

Questions and factual corrections are welcome at ryandcardin@gmail.com. Include the page URL, the statement or value in question, and the primary source that should be checked.

Independent profiles

Original research

Data reports by Ryan

Where U.S. high-tide flooding grew fastest, 2000–2025
A reproducible NOAA station analysis comparing five-year averages at 71 U.S. coastal gauges, with the full dataset and methodology.
2026 U.S. king tide dates
Representative peak dates, local times, predicted heights, and top-tide windows at 29 NOAA reference stations.

Editorial guides