Phoenix to Philadelphia Turbulence Forecast

PHX → PHL · 2,071 miles · ~4h 39m

What to Expect

The Phoenix to Philadelphia route presents a diverse range of potential turbulence, given that it crosses so much of the country. Departing Phoenix, you might experience some bumps caused by thermal turbulence over the Mojave and Sonoran Deserts, as the hot air rises. As you cross the Southern Rockies, be prepared for mountain wave turbulence, a common phenomenon when wind flows over mountainous terrain. Over the Great Plains, expect possible clear-air turbulence (CAT), which can occur even in seemingly clear skies. Further east, you'll fly over Tornado Alley and the Mississippi Valley, where severe convective turbulence and general convective turbulence can be present, especially in warmer months. As you approach Philadelphia, you'll cross the Ohio Valley, where frontal turbulence is common. Finally, flying over the Northern Appalachians, you could encounter mechanical turbulence before arriving at the Atlantic Seaboard, where clear-air turbulence (CAT) is again possible. Pilots are very familiar with these patterns and are constantly monitoring conditions to ensure a safe and comfortable flight.

The Phoenix to Philadelphia 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

• 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.
• Clear-Air Turbulence (CAT): The jet stream frequently meanders over the Great Plains, producing wind shear and clear-air turbulence at cruising altitudes.
• Severe Convective Turbulence: Tornado Alley supercells produce some of the most intense convective turbulence in North American aviation.

When Is This Route Bumpiest?

Winter and early fall typically offer the smoothest rides on this route. Cooler temperatures mean less thermal activity over the deserts and plains, and fewer thunderstorms in Tornado Alley. Summer, late winter, spring, early spring, and early summer tend to be bumpier. The warmer months bring increased thermal turbulence over the deserts, more convective activity in the central states, and stronger frontal systems passing through the Ohio Valley. Spring, especially, sees a lot of unsettled weather across the country, which can contribute to a less smooth flight.

Tips for This Flight

Opting for a morning flight is often the best strategy, as the atmosphere tends to be more stable before the day heats up. Any turbulence you do encounter is likely to feel like driving over a bumpy road for a few minutes, and modern planes are built to withstand much stronger forces. For extra comfort, choose a seat over the wing, as this area experiences less motion, and remember to stay hydrated to help your body cope with any unexpected sensations. Remember, your pilots are highly trained to handle all types of weather, so relax and enjoy the journey.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.