nhc_cone_radii

tropycal.utils.nhc_cone_radii(year, basin, forecast_hour=None)[source]

Retrieve the official NHC Cone of Uncertainty radii by basin, year and forecast hour(s). Units are in nautical miles.

Parameters

  • year (int) – Valid year for cone of uncertainty radii.

  • basin (str) – Basin for cone of uncertainty radii. If basin is invalid, return value will be an empty dict. Please refer to Map Domain Options for available basin options.

  • forecast_hour (int or list, optional) – Forecast hour(s) to retrieve the cone of uncertainty for. If empty, all available forecast hours will be retrieved.

Returns

dict – Dictionary with forecast hour(s) as the keys, and the cone radius in nautical miles for each respective forecast hour as the values.

Notes

  1. NHC cone radii are available beginning 2008 onward. Radii for years before 2008 will be defaulted to 2008, and if the current year’s radii are not available yet, the radii for the most recent year will be returned.

  2. NHC began producing cone radii for forecast hour 60 in 2020. Years before 2020 do not have a forecast hour 60.