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). Twice a day, at 00Z and 12Z, 10 additional perturbed forecasts are run out to 36 hours, giving an 11 member ensemble for short-range forecasting.