The 5~7-day ensemble forecasts for Tropical Cyclones (TC) of western North Pacific are provided using an ensemble predication system based on WRF model. The system contains 80 members with initial conditions from the WRF/EnKF ensemble perturbed members (link to “Dataset: WRF/EnKF ensemble analyses for western North Pacific”).

The continuously cycled WRF/EnKF ensemble analyses for western North Pacific products are produced using the WRF model with 57 vertical levels and model top at 10 hPa. For years 2016-2018, 18-km horizontal grid spacing is used for domain 1 with grid numbers 520 x 660, and 6-km horizontal grid spacing is used for vortex following domain 2 with grid numbers 180 x 180 when an advisory TC position is announced. Since year 2019, 12-km horizontal grid spacing has been used for a single domain with grid numbers 560x720.