Datasets
A subset of ECMWF real-time forecast data from the IFS and AIFS models is made available to the public free of charge. Their use is governed by the Creative Commons CC-BY-4.0 licence and the ECMWF Terms of Use.
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Ensemble forecast runs produced by the ECMWF Artificial Intelligence Forecasting System (AIFS) Ensemble model.
4 forecast runs per day (00/06/12/18) 6 hourly steps to 360 (15 days)More information can be found on the implementation page.
X-i: AIFS ENS forecastProduct description
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On 12 May 2026, a new forecast stream will be produced by ECMWF's operational Artificial Intelligence Forecasting System ensemble model (AIFS ENS).
The new forecast stream is for wave forecast runs, marking ECMWF's first operational data-driven wave forecasts.
4 forecast runs per day (00/06/12/18) 6 hourly steps to 360 (15 days)XIII-i: AIFS forecast
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Single forecast runs produced by the ECMWF Artificial Intelligence Forecasting System (AIFS) deterministic model.
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On 12 May 2026, a new forecast stream will be produced by ECMWF's operational Artificial Intelligence Forecasting System deterministic model (AIFS Single).
The new forecast stream is for wave forecast runs, marking ECMWF's first operational data-driven wave forecasts.
4 forecast runs per day (00/06/12/18) 6 hourly steps to 360 (15 days)XII-i: Deterministic AIFS forecast
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ECMWF is now running version 2 of its Artificial Intelligence Forecasting System (AIFS). The AIFS consists of a deterministic model, AIFS Single, and an ensemble model, AIFS ENS.
The deterministic model has been running operationally since 25 February 2025 and was upgraded from AIFS Single v1.1 to AIFS Single v2 on 12 May 2026. Further details can be found on the dedicated Implementation of AIFS Single v1 page.
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Ensemble (ENS) of forecasts providing an estimate of the reliability of a single forecast. Currently there are 50 perturbed members in the ensemble.
ENS offers "High Frequency products" until step 144:
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These products are available to the African Center of Meteorological Application for Development (ACMAD) countries.
Based on HRESThe products outlined below are disseminated via EUMETCast
Please refer to WMO Additional products for the equivalent products available on a global domain via the ECMWF's DCPC FTP server.
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Single prediction that uses
observations prior information about the Earth-system ECMWF's highest-resolution modelIFS Medium range Control forecast offers "High Frequency products"
4 forecast runs per day (00/06/12/18) (see dissemination schedule for details) Hourly steps to step 90 for all four runs.Not all post-processed Products are available at 06/18 runs or in hourly steps.
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IFS Medium-range Control forecast (Wave) is coupled to the IFS Medium-range Control forecast and it provides direct output "High Frequency products":
4 forecast runs per day (00/06/12/18) (see dissemination schedule for details) Hourly steps to step 90 for all four runsThe model computes between the latitudes -78 and 90, the output grid is artificially extended to -90.
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Single prediction that uses
observations prior information about the Earth-system ECMWF's highest-resolution modelHRES Direct model output Products offers "High Frequency products"
4 forecast runs per day (00/06/12/18) (see dissemination schedule for details) Hourly steps to step 90 for all four runs.Not all post-processed Products are available at 06/18 runs or in hourly steps.
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