Seattle to Myrtle Beach Turbulence Forecast

SEA → MYR · 2,430 miles · ~5h 22m

What to Expect

Your flight from Seattle to Myrtle Beach crosses a diverse range of landscapes, each with its own potential for turbulence. Immediately after takeoff, you might encounter mountain wave turbulence as you cross the Cascades. Later, as you fly over the Pacific Coast and the Great Plains, clear-air turbulence, or CAT, can occur; this is often unexpected but generally mild. The Northern Rockies can also produce mountain wave turbulence. Further east, over the Mississippi Valley and the Southeast Interior, convective turbulence from rising warm air during the summer months is possible. As you approach Myrtle Beach, you might experience frontal turbulence over the Ohio Valley or mechanical turbulence over the Southern Appalachians, both usually associated with weather fronts and changes in terrain. Remember, pilots are constantly monitoring weather conditions and adjusting flight paths to minimize any discomfort, so they're ready for it.

The flight between Seattle and Myrtle Beach 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.
• Convective Turbulence: The Mississippi Valley is a breeding ground for squall lines and mesoscale convective systems that produce widespread turbulence.
• 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 smoothest flights on this route are usually found in the summer and early fall. During these times, the atmosphere tends to be more stable, reducing the likelihood of convective turbulence over the Mississippi Valley and Southeast Interior. Fall, winter, early spring, late fall, spring, and early summer can be bumpier. During the colder months, stronger jet streams and weather systems can increase the chances of clear-air turbulence, frontal turbulence, and mountain wave turbulence as you cross the mountains. Spring also sees increased convective activity that can lead to bumpier conditions.

Tips for This Flight

For the calmest experience, consider booking a morning flight, as convective turbulence tends to build later in the day. Any turbulence you do encounter on this route will probably feel like driving on a slightly bumpy road or a boat gently rocking on the water, more of a nuisance than a serious concern. To stay comfortable, choose a seat over the wing for a slightly smoother ride, and remember to stay hydrated; dehydration can amplify any feelings of anxiety. Taking slow, deep breaths can also help you relax. Remember that the flight crew is there to support you, and turbulence is a normal part of flying.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.