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Which forecast product warns of that hazard?

  • A.A significant weather chart showing areas of expected turbulence
  • B.A tephigram, from which the stability of the lower atmosphere may be assessed for convective purposes
  • C.A synoptic surface chart
  • D.A satellite water vapour image, which reveals the position of the dry intrusion behind a developing cyclone

Answer: A

Significant weather charts for aviation mark areas of expected clear air turbulence together with their vertical extent and severity, based on shear and stability diagnostics from model output. Tephigrams and surface charts serve other purposes, and water vapour imagery shows upper level structure that may be suggestive but is not a turbulence forecast in itself.

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