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Past tropical cyclones

Every numbered storm in the archive: the centres' best tracks, each forecast made for it, and how far each one missed.

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    Time

    Track error, km

    Distance to the best track at the synoptic hours, counted only while the system is a tropical or subtropical cyclone; an ensemble is scored by its mean.

    Cases. GitHub. Best tracks: IBTrACS; forecasts: NHC, JTWC, UCAR RAL; contains modified ECMWF Open Data (CC BY 4.0). GDM: contains experimental research data produced by © 2023-25 Google LLC (CC BY 4.0), for research modelling only, not validated for real world use.

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