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

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These charts represent the height of the air temperature 0°C isotherm or the Wet bulb temperature 0°C isotherm...

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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 show areas where anomalous CAPE are likely to occur.

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These charts show areas where anomalous CAPE Shear are likely to occur.

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This chart aims to highlight areas where unusually anomalous 2 metre temperatures are ...

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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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This chart aims to highlight areas where unusually anomalous precipitation is likely to ...

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These charts show areas where anomalous significant wave heights are likely to occur. These charts are based on the ECMWF ense ...

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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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Cumulative Density Functions (CDF) describes the distribution of the values of a variable (e.g.temperature) as forecast by the ENS ensemble members. The CDF curve shows the proportion (in %) of ENS members...

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Meteograms show a probabilistic interpretation of the ENS forecasts for specific locations using a box and whisker plot. It shows the time evolution of the distribution of several meteorological parameters on a single diagram...

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Ensemble Mean Sea Level Pressure (MSLP) is the mean MSLP of the ensemble members (in hPa) and detail is smoothed out. These charts show surface pressure patterns...

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Spread usually, but not always, increases with forecast range. Spread refers to the uncertainty of the values of a parameter but it does not necessarily refer to the flow patterns...

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The ensemble mean is the mean value derived from all the 50 ensemble members plus the control member. This value attempts to capture the general picture while smoothing out spurious detail...

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The ensemble spread is a measure of the differences between the 50 ensemble members plus the control member and is represented by the standard deviation with respect to the ensemble mean...

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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