NATIONAL METEOROLOGICAL CENTER OF CMA

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Base time(UTC)：
00
12

Forecast hours >> 000

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Description information

0-6km vertical shear：The surface to 6 km above ground level change in wind. Thunderstorms tend to become more organized and persistent as vertical shear increases, while supercells are commonly associated with vertical shear values of 20-35 m/s and greater through this depth.

Calculation formula:

Where is the wind of 6 km above ground level and is the surface wind.