Kona to Knoxville Turbulence Forecast

KOA → TYS · 4,446 miles · ~9h 24m

What to Expect

Your Kona to Knoxville flight will take you across a wide range of geographic features, each potentially contributing to different kinds of turbulence. Initially, expect possible Oceanic Clear-Air Turbulence and Oceanic Convection as you cross the open Pacific. Approaching the Pacific Coast, Clear-Air Turbulence (CAT) is possible. As you cross the Mojave and Sonoran Deserts, thermal turbulence could develop. Over the Southern Rockies, you might encounter Mountain Wave Turbulence. Then, above the Great Plains, more Clear-Air Turbulence (CAT) is possible. Tornado Alley comes next with its risk of Severe Convective Turbulence, followed by Convective Turbulence over the Ozark Plateau and Mississippi Valley. Finally, the last portion includes Frontal Turbulence over the Ohio Valley, Mechanical Turbulence above the Southern Appalachians, and Convective Turbulence across the Southeast Interior. Pilots are trained to anticipate and navigate these conditions, using onboard radar and reports from other aircraft to find the smoothest possible path. Each of these weather phenomena is a well-understood part of flying.

The Kona to Knoxville route passes over the Southern Rockies in New Mexico and southern Colorado. While somewhat lower than the peaks to the north, these mountains still produce notable mountain wave turbulence, particularly when strong southwesterly winds aloft align perpendicular to the ridgeline.

Turbulence Factors on This Route

• Oceanic Clear-Air Turbulence: Transoceanic jet stream crossings produce extended stretches of clear-air turbulence over the open Pacific.
• Oceanic Convection: Isolated thunderstorms over warm Pacific waters can develop away from radar coverage, catching flights off guard.
• Thermal Turbulence: Extreme desert heating generates strong thermal updrafts that cause low-to-mid-level turbulence, especially in summer afternoons.
• Mountain Wave Turbulence: The Southern Rockies produce lee waves when southwesterly upper-level winds flow across the terrain.

When Is This Route Bumpiest?

The spring, early summer, and summer months are typically the calmest for this route, so aiming for a flight during these times may provide the smoothest experience. Winter, late summer, and early spring can be bumpier because of stronger jet streams contributing to clear-air turbulence and more frequent storm systems affecting Tornado Alley, the Ozark Plateau, the Mississippi Valley, and the Ohio Valley. Also, winter and late winter can bring Mountain Wave Turbulence over the Southern Rockies.

Tips for This Flight

If possible, aim for a morning flight, as daytime heating can intensify thermal turbulence. Any turbulence you experience on this route will likely feel like driving over a bumpy road or the sensation of a quick dip on a rollercoaster. For extra comfort, choose a seat over the wing, as this area of the plane tends to experience less motion. Staying well-hydrated and practicing slow, deep breathing can also help you feel more relaxed. Remember that turbulence is a normal part of flying, and the crew is well-equipped to handle it.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.