Seattle to Savannah Turbulence Forecast

SEA → SAV · 2,390 miles · ~5h 17m

What to Expect

Your flight from Seattle to Savannah crosses a wide variety of terrain, making it interesting from a turbulence perspective. Initially, expect potential Mountain Wave Turbulence as you fly over the Cascades. Once you're over the Pacific Coast, there's a possibility of Clear-Air Turbulence (CAT). The Northern Rockies can also bring Mountain Wave Turbulence. As you cross the Great Plains, you might encounter more Clear-Air Turbulence (CAT). Tornado Alley can bring Severe Convective Turbulence, while the Mississippi and Ohio Valleys might present Convective and Frontal Turbulence, respectively. Approaching Savannah, the Southeast Interior could have Convective Turbulence, and the Southern Appalachians might cause Mechanical Turbulence. Pilots are very familiar with these patterns; they monitor and often navigate around them daily, ensuring a safe flight.

The flight between Seattle and Savannah 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.
• Severe Convective Turbulence: Tornado Alley supercells produce some of the most intense convective turbulence in North American aviation.
• Frontal Turbulence: The Ohio Valley is a preferred storm track where frontal boundaries and embedded convection create turbulence year-round.

When Is This Route Bumpiest?

The summer months offer the smoothest experience on this route, particularly early fall, when the atmosphere is generally more stable, reducing the likelihood of significant turbulence over most areas. Fall, winter, early spring, late fall, spring, and early summer tend to be bumpier. This is because the temperature contrasts that cause turbulence in the Plains and Valleys are more pronounced during these seasons. The mountains can also generate more wave activity in cooler air. Summer is often, though not always, calmer, with fewer strong weather systems crossing the country.

Tips for This Flight

Opting for a morning flight can often provide a smoother ride, as the atmosphere tends to be more stable before the day heats up and convective activity increases. Any turbulence you experience on this route will likely feel like driving on a slightly bumpy road or encountering moderate chop on a small boat. Staying hydrated and choosing a seat over the wing can help minimize motion sickness. Taking slow, deep breaths can also help regulate your nervous system and calm your body. Remember, the pilots are highly trained and constantly monitoring conditions to ensure your safety and comfort.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.