Wind Barb

A Wind barb chart uses wind barb shapes to indicate wind speed and direction.

Speed is indicated using "flags" on the end of the barb:

  • Each half of a flag depicts 5 knots (5.8 mph).

  • Each full flag depicts 10 knots (12 mph).

  • Each pennant (filled triangle) depicts 50 knots (58 mph).

Direction is indicated by orientation of the flags on the barb; the flags point in the direction of the source of the wind. For more information, see Information about wind barbs from the National Weather Service.

For example, the following Wind barb chart has these measures, using data set noaa_gfs_v from NOAA:

  • Lon - AVG longitude

  • Lat - AVG latitude

  • Speed - AVG a80m_Wind_Speed

  • Direction - AVG a_80m_Wind_Direction

You can increase or decrease the number of barbs in the right panel. Here, barb number is increased to the maximum to provide a more contoured visual.

Using the optional Color measure, you can add more information to your Wind barb chart. For example, the following figure shows a Color value of a AVG a2m_Relative_Humidity to provide humidity information for the air, with yellow indicating areas of higher relative humidity. Adjust the Color Palette to change how the Color measure is represented.

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