Latest news, Aug 2, 2026: I've made some improvements to how BumpySkies treats airport elevations, as well as the rate at which planes are forecast to change altitude when taking off or landing. More about it in the next newsletter. Until then, if anything seems off, please report an issue!

GPD809: 4 legs

GPD809, HPN to ACK, departing 5:56 AM EDT, Aug 3

Turbulence forecast map for GPD809, HPN to ACK

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(Forecast data last collected at 5:00 AM EDT on Aug 3, 2026.)

  1. Takeoff from HPN at 5:56 AM EDT, Aug 3.
  2. 5:57 AM EDT: Calm skies for the next 1 minute.
  3. 5:58 AM EDT: Light turbulence likely for the next 9 minutes.
  4. 6:07 AM EDT: Moderate turbulence likely for the next 2 minutes.
  5. 6:09 AM EDT: Light turbulence likely until you land.
  6. Landing at ACK at 6:43 AM EDT.

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Nelly

Nelly says: Bumpy skies can be scary, but they're not dangerous!

See our turbulence safety page for more information, including links to other resources for nervous fliers.

GPD809, TEB to ACK, departing 8:10 AM EDT, Aug 3

Turbulence forecast map for GPD809, TEB to ACK

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(Forecast data last collected at 5:00 AM EDT on Aug 3, 2026.)

Preliminary forecast. Check back within an hour or two of takeoff to see the most accurate route map and turbulence forecast for this flight.

  1. Takeoff from TEB at 8:10 AM EDT, Aug 3.
  2. 8:11 AM EDT: Light turbulence likely for the next 5 minutes.
  3. 8:16 AM EDT: Moderate turbulence likely for the next 2 minutes.
  4. 8:18 AM EDT: Light turbulence likely for the next 6 minutes.
  5. 8:24 AM EDT: Moderate turbulence likely for the next 3 minutes.
  6. 8:27 AM EDT: Light turbulence likely for the next 4 minutes.
  7. 8:31 AM EDT: Calm skies for the next 24 minutes.
  8. 8:55 AM EDT: Light turbulence likely until you land.
  9. Landing at ACK at 9:06 AM EDT.

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Nelly

Nelly says: Bumpy skies can be scary, but they're not dangerous!

See our turbulence safety page for more information, including links to other resources for nervous fliers.

GPD809, ACK to TEB, departing 9:48 AM EDT, Aug 3

Turbulence forecast map for GPD809, ACK to TEB

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(Forecast data last collected at 5:00 AM EDT on Aug 3, 2026.)

Preliminary forecast. Check back within an hour or two of takeoff to see the most accurate route map and turbulence forecast for this flight.

  1. Takeoff from ACK at 9:48 AM EDT, Aug 3.
  2. 9:49 AM EDT: Light turbulence likely for the next 2 minutes.
  3. 9:51 AM EDT: Calm skies for the next 22 minutes.
  4. 10:13 AM EDT: Light turbulence likely until you land.
  5. Landing at TEB at 10:52 AM EDT.

Get notified about a future GPD809 flight First Class

Nelly

Nelly says: Bumpy skies can be scary, but they're not dangerous!

See our turbulence safety page for more information, including links to other resources for nervous fliers.

GPD809, MVY to HPN: no forecast yet

It's too early to give you a forecast. I don't yet know the flight plan for this leg of GPD809, so I can't give you an accurate forecast right now. Come check again closer to departure time. (Note that sometimes I don't know the flight plan until minutes before boarding!)

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