Greenville to Phoenix Turbulence Forecast

GSP → PHX · 1,700 miles · ~3h 54m

What to Expect

The Greenville to Phoenix route, heading west for about 1700 miles, crosses a diverse range of terrains, each potentially contributing to turbulence. Initially, expect possible mechanical turbulence over the Southern Appalachians, caused by wind interacting with the mountains. As you fly further west across the Southeast Interior and Mississippi Valley, convective turbulence from rising warm air is common, particularly if it's a warm day. The Ozark Plateau could bring more of the same. Tornado Alley is next, and although severe convective turbulence is possible here, pilots closely monitor and avoid active storm cells. Once over the Great Plains, clear-air turbulence (CAT) can occur at higher altitudes due to differing air currents. Approaching Phoenix, you'll cross the Southern Rockies where mountain wave turbulence is possible, and finally, thermal turbulence over the Mojave and Sonoran Deserts as the ground heats up. It sounds like a lot, but these are standard atmospheric conditions pilots are trained to handle and navigate around every day.

The Greenville to Phoenix 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

• Mechanical Turbulence: The Southern Appalachians produce terrain-induced chop, especially during strong wind events and summer convection over the ridgeline.
• Convective Turbulence: The warm, humid Southeast interior supports frequent thunderstorm development, particularly during afternoon hours.
• Clear-Air Turbulence (CAT): The jet stream frequently meanders over the Great Plains, producing wind shear and clear-air turbulence at cruising altitudes.
• Mountain Wave Turbulence: The Southern Rockies produce lee waves when southwesterly upper-level winds flow across the terrain.

When Is This Route Bumpiest?

For the smoothest flight, aim to travel during the fall months. Late fall and winter can also be relatively calm. During these seasons, the convective activity is reduced, minimizing bumps over the Southeast Interior, Mississippi Valley, and Ozark Plateau. Spring, early summer, and late winter tend to be bumpier. This is when convective turbulence in the Southeast Interior, Mississippi Valley, Ozark Plateau, and Tornado Alley, mountain wave turbulence over the Southern Rockies, and thermal turbulence over the Mojave and Sonoran Deserts are most active, potentially leading to a less smooth flight.

Tips for This Flight

Booking a morning flight is your best bet for a smoother trip, as the air is generally calmer before the day heats up. Any turbulence you encounter on this route will likely feel like driving over a bumpy road or hitting a few potholes. To stay comfortable, choose a seat over the wing, which tends to experience less motion. Staying hydrated and focusing on slow, deep breaths can also help you relax. Remember, the pilots are highly skilled at managing these conditions, and your safety is always their top priority.

Get Your Forecast

Related Routes

See all routes from Greenville or to Phoenix.

More from Greenville

More to Phoenix

Forecasts based on NOAA HRRR and GFS atmospheric model data.