Datasets
Wind speeds near the surface are roughly proportional to the distance between isobars so closely packed isobars mean strong surface winds...
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The charts show the forecast value of the vertically integrated total column water (vapour + cloud water + cloud ice but with no precipitation included) in units of kg m⁻²...
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Forecast precipitation is considered to be snow if the model atmosphere above and at the ground surface is forecast to be below 0°C. Where the ground surface lies near the 0°C level...
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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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LAPrec1871 starts in 1871 and is based on data from 85 input series;
LAPrec1901 starts in 1901 and is based on data from 165 input series.
Interval/period: Sun, 01/01/1871 - Wed, 05/13/2026
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 daily and monthly data are pre-calculated and have the following types depending on the variables: daily and monthly averages, extremes and totals.
Interval/period: Sat, 09/01/1990 - Sat, 02/28/2026
Bulk Wind Shear charts show the scalar value of the shear between the winds at the two pressure levels selected. Shear can be useful in assessing the strength of a front or...
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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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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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These charts show the mean and variation in the latest ECMWF ensemble forecast (ENS). ...
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Data is available from 1940 onwards.
ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Sat, 05/02/2026
Data is available from 1940 onwards.
ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Sat, 05/02/2026
Data is available from 1940 onwards. ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Fri, 12/06/2024
Data is available from 1940 onwards.
ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Wed, 04/01/2026
Data is available from 1940 onwards.
ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Wed, 04/01/2026
Data is available from 1940 onwards.
ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Sat, 05/02/2026
Data is available from 1940 onwards.
ERA5 replaces the ERA-Interim reanalysis.
Interval/period: Mon, 01/01/1940 - Sat, 05/02/2026
Interval/period: Sat, 09/01/1984 - Sat, 01/31/2026
Interval/period: Sat, 09/01/1984 - Thu, 07/31/2025
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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Interval/period: Mon, 01/01/1979 - Sun, 03/01/2026
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