Des Moines to Palm Springs Turbulence Forecast

DSM → PSP · 1,353 miles · ~3h 12m

What to Expect

Your flight from Des Moines (DSM) to Palm Springs (PSP), about 3 hours and 12 minutes heading west, crosses some interesting terrain that can lead to bumps. Right after takeoff you'll be over the Great Plains, where you might experience clear-air turbulence, or CAT, caused by shifting air currents high up. As you approach the Front Range and then cross the Central Rockies, expect the possibility of mountain wave turbulence; this is like hitting invisible waves as the wind flows over the mountains. Finally, as you descend toward Palm Springs over the Mojave and Sonoran Deserts, thermal turbulence might cause some chop, a result of rising warm air. These are all very common weather phenomena, and pilots are trained to anticipate and navigate them daily.

Flights between Des Moines and Palm Springs pass along the Front Range, where the abrupt rise of the Colorado Rockies generates some of the strongest mountain wave turbulence in the continental U.S. Downdrafts east of the ridgeline can be intense, and rotor turbulence near the surface sometimes extends to cruising altitude during high-wind events.

Turbulence Factors on This Route

• 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: Strong westerly winds over the Front Range create oscillating waves that can produce sustained moderate turbulence at jet cruise levels.
• 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?

The smoothest flights on this route are usually in the fall and early winter. The air tends to be more stable, reducing the likelihood of thermal and mountain wave turbulence, and the jet stream is often less active, minimizing clear-air turbulence. Winter, early spring, and summer can be a bit bumpier. The combination of stronger jet streams, more intense solar heating over the deserts, and lingering mountain wave effects can lead to increased turbulence during these seasons.

Tips for This Flight

If you're concerned about turbulence, consider booking your flight for the early morning; the air is generally calmer before the day heats up. Any turbulence you encounter on this route will likely feel like driving over a series of potholes or small dips in the road. For extra comfort, try to get a seat over the wing; it's the most stable part of the plane. Remember to stay hydrated, practice deep, slow breathing, and know that the pilots are always monitoring the conditions to ensure a safe and comfortable flight.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.