Seattle to Buffalo Turbulence Forecast

SEA → BUF · 2,116 miles · ~4h 44m

What to Expect

Your Seattle to Buffalo flight is interesting, turbulence-wise, because it crosses so many different types of terrain. Leaving Seattle, you might encounter mountain wave turbulence as you cross the Cascades. As you head east over open country, be prepared for clear-air turbulence, particularly as you pass the Pacific Coast, the Great Plains, and the Upper Midwest. The Northern Rockies can create more mountain wave turbulence. As you approach Buffalo, there’s a chance of lake-effect turbulence over the Great Lakes, especially if the air is colder. And finally, the Northern Appalachians could produce mechanical turbulence closer to landing. Pilots are very familiar with these patterns; they routinely monitor and adjust to give you the smoothest ride possible. It's all part of the job.

The flight between Seattle and Buffalo passes over the Cascades, the volcanic mountain chain stretching from northern California through Washington. When moist Pacific air is forced up and over the Cascades, it creates both orographic turbulence and downstream wave activity. The terrain is especially steep near major volcanoes like Mount Rainier, amplifying the effect.

Turbulence Factors on This Route

• Mountain Wave Turbulence: The Cascades create lee waves and orographic turbulence, especially when Pacific weather systems push moist air over the range.
• Clear-Air Turbulence (CAT): Pacific jet streaks arriving onshore drive upper-level clear-air turbulence along the West Coast.
• Lake-Effect Turbulence: The Great Lakes produce lake-effect convection and low-level wind shear from land-water temperature contrasts.
• Mechanical Turbulence: The Northern Appalachians generate low-level mechanical turbulence during strong post-frontal northwest winds.

When Is This Route Bumpiest?

For the smoothest possible flight, summer and early fall are your best bets. The weather patterns are generally more stable then, meaning less turbulence over the Rockies, the Plains, and the Great Lakes. Fall, winter, early spring, late fall, spring, and early winter tend to be bumpier. Temperature differences can be more extreme, contributing to mountain wave and clear-air turbulence. Lake-effect turbulence is also more common during colder months as cold air passes over warmer lake water.

Tips for This Flight

If you're concerned about turbulence, try booking your flight for the morning. The atmosphere tends to be more stable earlier in the day. Any turbulence you do experience on this route will most likely feel like driving on a slightly bumpy road, perhaps with a few stronger jolts. Choosing a seat over the wing can minimize the sensation of movement. Remember to stay hydrated and focus on slow, deep breaths; knowing your pilots are well-prepared and monitoring conditions constantly should help you relax and enjoy the journey.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.