What is correct about forecasts of en-route turbulence?

Question

Accepted Answer

The accurate forecasting of the severity, extent, and levels affected by turbulence is based on modelling; 
 because forecast documentation also covers a fixed time period it is often NOT reliable, so pilot reports of 
 turbulence are of great value.

Answer

The most recent forecasts of en-route turbulence on significant weather charts are considered to be both 
 reliable and accurate because they are modified automatically by pilot in-flight reports relayed via data link to 
 the relevant Meteorological Watch Office for the applicable FIR.

Answer

The turbulence forecasts on significant weather charts are based on modern and comprehensive computer 
 modelling techniques using all available data, and they are considered to be both accurate and reliable, making 
 pilot reports redundant.

Answer

The forecasts of en-route turbulence issued by the Meteorological Watch Office for the FIR are NOT 
 considered reliable because they depend on pilots making accurate and timely in-flight reports of turbulence, 
 and in practice these reports are subjective and often NOT relevant to other aircraft.

Crowdly

What is correct about forecasts of en-route turbulence?

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