Fresno to Phoenix Turbulence Forecast

FAT → PHX · 493 miles · ~1h 29m

What to Expect

Flying southeast from Fresno (FAT) to Phoenix (PHX) takes you over some interesting terrain, which means there's a higher chance of experiencing some turbulence compared to a flight over flatlands. The first thing to consider is the Sierra Nevada. When strong winds blow across mountain ranges, they can create what's called mountain wave turbulence. This is why pilots often vary altitude when crossing the Sierra Nevada. Later, as you cross the Mojave and Sonoran Deserts, thermal turbulence is also a possibility. This happens when the sun heats the desert floor unevenly, creating rising warm air (thermals) that can cause bumps. Both of these turbulence types are very common and well-understood. Think of it as driving over a few potholes on a familiar road; the pilots know they're there and are prepared for them.

Flights between Fresno and Phoenix cross the Sierra Nevada, a steep mountain barrier in eastern California. The Sierra generates some of the most intense rotor and wave turbulence in the world — the famous "Sierra Wave" can reach the stratosphere. East-side downdrafts are especially sharp, and flights into or out of Reno or the Central Valley often feel the effects.

Turbulence Factors on This Route

• Mountain Wave Turbulence: The Sierra Nevada produces the well-known Sierra Wave, one of the strongest mountain wave systems in North America.
• Thermal Turbulence: Extreme desert heating generates strong thermal updrafts that cause low-to-mid-level turbulence, especially in summer afternoons.

When Is This Route Bumpiest?

For the smoothest possible ride on this route, consider flying in late summer or early fall, or even winter. During these periods, the atmospheric conditions are generally more stable. Spring and summer tend to be the bumpiest because the heating of the desert is at its peak, increasing thermal activity. Likewise, winter and spring winds flowing over the Sierra Nevada are often stronger, leading to more pronounced mountain wave turbulence. Keep an eye on the weather forecast, but generally, the shoulder seasons will be your friend.

Tips for This Flight

If you are concerned about turbulence, aim for a morning flight. The air tends to be calmer before the desert heats up in the afternoon. Any turbulence you encounter on this route is most likely to feel like driving on a slightly bumpy road, nothing more. To help yourself feel more comfortable, choose a seat over the wing, where movement is usually less noticeable. Staying hydrated can also help; drink plenty of water before and during the flight. Remember, the pilots are highly skilled and experienced at navigating these conditions, and your safety is always their top priority.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.