Operational NWP In Met Éireann

Met Éireann currently runs the HARMONIE-AROME NWP model.

The operational configuration uses cycle 40h1 of HARMONIE-AROME on the domain shown below, which consists of 1000 x 900 grid points in the horizontal at 2.5km resolution, with 65 levels in the vertical.

A 54-hour forecast is produced four times a day, at 00Z, 06Z, 12Z and 18Z.

This main forecast also acts as the control member for the Irish Regional Ensemble Prediction System (IREPS).

The latest version of this system is described in our article ‘Upgrade To Met Éireann’s Weather Forecast System April/May 2020’