Palm Springs to Des Moines Turbulence Forecast

PSP → DSM · 1,353 miles · ~3h 12m

What to Expect

Your Palm Springs to Des Moines flight is interesting because it crosses several distinct geographic areas, each with its own turbulence characteristics. Right after takeoff, you'll be over the Mojave and Sonoran Deserts, where rising warm air, called thermal turbulence, can cause some initial bumps. As you continue northeast, you'll cross the Central Rockies and Front Range, where mountain wave turbulence is common, especially when strong winds blow across the mountains. This can feel like a series of moderate jolts. Finally, as you level out over the Great Plains, you might encounter clear-air turbulence, or CAT, which is often unexpected but generally mild. Pilots are always monitoring conditions and adjusting altitude to find the smoothest ride possible; these phenomena are well-understood and constantly tracked.

Between Palm Springs and Des Moines, the flight path crosses the Central Rockies of Colorado and Utah. This area is one of the most turbulence-prone zones in the U.S., with mountain wave activity reported on more than half of winter days. Waves can propagate far downstream, meaning turbulence may begin well before or after the visible peaks.

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 Central Rockies produce frequent, sometimes severe, mountain waves that can extend 100+ miles downstream.
• Clear-Air Turbulence (CAT): The jet stream frequently meanders over the Great Plains, producing wind shear and clear-air turbulence at cruising altitudes.

When Is This Route Bumpiest?

The most consistently smooth flights on this route are typically in winter and fall, with summer and early fall also generally offering calm conditions. Winter often sees stable air masses over the plains, reducing clear-air turbulence. Summer can bring more thermal activity over the deserts, and early spring can still see mountain wave effects as weather patterns transition over the Rockies. Remember that weather is variable, but these trends can help you plan your trip for a more comfortable experience. If you can plan your trip during these times, that can help calm your nerves.

Tips for This Flight

For the smoothest flight, aim for a morning departure; the air is often calmer before the day heats up. Any turbulence you experience on this route will likely feel like driving over a series of small potholes or speed bumps, not anything alarming. If you're feeling anxious, try to get a seat over the wing; it's the most stable part of the plane. Remember to stay hydrated and practice slow, deep breathing; focusing on your breath can help you feel more grounded and in control, and remember that the crew is well-trained and there to support you.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.