Wind maps show the wind speed and direction over an area for a specific time, or a period. Wind is shown as flow movies, arrows and colours. There are also maps for gusts and wind combined with sea level pressure and the graticule. This can be activated by selecting the different options in the lower right corner with one click.
The map shows the expected wind, as average wind speed for the preceeding time interval. The wind scale is uniform for all parts of the world and seasons.
The wind speed is indicated with colours (Cold/Warm, Rainbow) and values when hovering over the selected area. The direction is indicated by the flow movie.
You can also find wind maps higher in altitude at a specific height in hPa by opening the drop-down list on the right.
These maps show wind speed measurements of weather stations all over the world for the indicated time. The colour scale is the same used for the maps of wind speed . Combining these maps with line plots gives you additional information: For instance, adding streamlines will show you modeled wind directions in addition to the actual wind speeds. More: see wind
These maps show the wind as average wind speed, with colours shown in the legend. In addition to the wind speed in a specific altitude, wind direction may be shown with streamlines, for instance, as well as the sea level pressure with isobars and others. More: see wind .
Wind (low speeds)
The gusts maps usually show the speed of the gusts at 10 m with colours. Hourly, maximum or period maximum wind gusts can be selected in the menu.
The speed shown is the maximum forecasted speed for the last time interval.
These maps show the wind speed with colours as shown in the legend. Further, contour lines between colours are marked with numbers that indicate the wind speed. Wind direction is visualised with arrows. More: see wind .
250hPa Wind (Jet stream)
These maps show the wind speed in the height of the 250 hPa pressure level. Wind speed is indicated with colours, whereas the wind direction is shown with streamlines. More: see wind .
The 250 hPa pressure level is the altitude of jet streams. Jet streams are strong and generally westerly winds in the upper troposphere. They are narrow and meandering currents with wind speeds up to 400km/h. There are mainly two different kinds of jet streams in the atmosphere, each of them occur on the northern and southern hemisphere: The polar jet stream and the subtropical jet stream.