ASA391, YYZ to SEA, departing 5:42 PM EDT, Jul 27

Turbulence forecast map for ASA391, YYZ to SEA

Report an issue

(Forecast data last collected at 12:00 PM EDT on Jul 27, 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 YYZ at 5:42 PM EDT, Jul 27.
  2. 5:43 PM EDT: Calm skies for the next 2 minutes.
  3. 5:45 PM EDT: Light turbulence likely for the next 15 minutes.
  4. 6:00 PM EDT: Moderate turbulence likely for the next 1 minute.
  5. 6:01 PM EDT: Light turbulence likely for the next 25 minutes.
  6. 6:26 PM EDT: Moderate turbulence likely for the next 1 minute.
  7. 6:27 PM EDT: Light turbulence likely for the next 3 hours and 13 minutes.
  8. 9:40 PM EDT: Calm skies for the next 24 minutes.
  9. 10:04 PM EDT: Light turbulence likely for the next 15 minutes.
  10. 10:19 PM EDT: Calm skies for the rest of the flight.
  11. Landing at SEA at 10:25 PM EDT.

Get notified about a future ASA391 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.

šŸ“£ To stay informed about updates to BumpySkies, subscribe to the free newsletter:

You can also browse past newsletter issues.

BumpySkies is free, and stays online thanks to its subscribers.

If you find this service helpful, please consider subscribing to BumpySkies First Class. For $5 a month you'll help keep BumpySkies running—and you can set up turbulence-forecast notifications for your own flights.

For best results, try it shortly before departure.

(Or, see a random upcoming flight's forecast.)