How often are maximum turbulence potential charts (GTG-2) issued?

Maximum turbulence potential charts (GTG-2) are issued hourly to provide pilots and dispatchers with up-to-date information regarding potential turbulence along specific flight routes. This frequent update cycle is crucial because turbulence can vary significantly within short timeframes due to factors like weather changes, atmospheric conditions, and terrain influences. The hourly issuance allows for timely adjustments in flight planning to enhance safety and passenger comfort.

In contrast, other issuance frequencies, such as daily or twice daily, would not adequately reflect the rapid changes in atmospheric conditions that can impact turbulence levels, making those options less suitable for operational needs.