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The air flow is not the same at all levels and can be very different in strength and direction when associated with vigorous weather systems...

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These charts show the difference between the latest HRES Long Window Data Analysis (LWDA) for the main synoptic hours of 00, 06, 12 and 18UTC, and its corresponding background field taken from the previous HRES LWDA run with the same validity time...

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These charts show areas where anomalous 2 m maximum temperatures are likely to occur. These charts are based on the ECMWF ensem ...

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These charts show areas where anomalous 2 m minimum temperatures are likely to occur. These charts are based on the ECMWF ensem ...

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These charts show areas where anomalous 2 m temperatures are likely to occur. These charts are based on the ECMWF ensemble forecas ...

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These charts aim to provide pointers to areas where anomalous precipitation amounts are likely to occur during the 24 hour, 2 day, 5 day or 10 day period previous to the selected validity time...

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These charts show areas where anomalous snow fall is likely to occur. These charts are based on the ECMWF ensemble for ...

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These charts aim to provide pointers to areas where anomalous values of water vapour flux are likely to occur based on the ECMWF en ...

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These charts show areas where anomalous 10 m wind gusts are likely to occur. These charts are based on the ECMWF ensemble fore ...

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These charts show areas where anomalous 10 m wind speeds are likely to occur. These charts are based on the ECMWF ensemble for ...

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These charts show the mean and variation in the latest ECMWF ensemble forecast (ENS). ...

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open_in_newview in Open Charts

These charts show the mean and variation in the latest ECMWF ensemble forecast (ENS). ...

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open_in_newview in Open Charts

These charts show the mean and variation in the latest ECMWF ensemble forecast (ENS). ...

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open_in_newview in Open Charts

These charts show the mean and variation in the latest ECMWF ensemble forecast (ENS). ...

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These diagrams aim to show the time evolution of regimes which are indicative of the likely weather in and around Europe.The winds across the Atlantic can usefully be classified into four regimes ...

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The CAT (Clear Air Turbulence) parameter is given in units of the turbulent Eddy Dissipation Rate (EDR), product shows EDR values on selected flight levels overlayed with wind speeds.

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Cloud base height is derived by upwardly searching the structure of the model atmosphere to find the altitude where the cloud fraction becomes >1% and...

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These charts show clustering of ENS members based on the 500 hPa height forecasts. ...

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These diagrams compare Continuous Ranked Probability Skill Scores (CRPSS) of ECMWF with ...

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The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...

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In the northern hemisphere the air rotates anti-clockwise around low contour centres and clockwise around the high contour centres. In the southern hemisphere the air rotates clockwise around low contour centres and ...

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These diagrams compare scores of ensemble control (red) and ensemble members (central 50% of ...

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This is a time/longitude diagram (Hovmoller diagram) of 500 hPa or 1000 hPa mean height anomaly ...

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The time-longitude diagram (Hovmoller diagram) shows a section of ensemble mean anomalies or ...

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**Note:** In **June 2023** ECMWF implemented a **major upgrade ...**

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open_in_newview in Open Charts