Maui to Des Moines Turbulence Forecast

OGG → DSM · 3,882 miles · ~8h 16m

What to Expect

Your upcoming flight from Maui (OGG) to Des Moines (DSM) is a long one, about 3882 miles heading northeast, so it will cross several different weather patterns. The first part of the flight, over the open Pacific, can have what's called oceanic clear-air turbulence or occasional oceanic convection, which is caused by the sun heating the ocean unevenly. As you approach the Pacific Coast, you might encounter more clear-air turbulence. Later, as you cross the Sierra Nevada and the Central Rockies, expect the possibility of mountain wave turbulence, which is when wind flows over the mountains and creates waves in the atmosphere. You might experience this again over the Front Range. Finally, crossing the Great Plains can bring further clear-air turbulence. Pilots are trained extensively to deal with all types of turbulence, and they use sophisticated tools to monitor and navigate around any significant areas.

Flights between Maui and Des Moines 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

• Oceanic Clear-Air Turbulence: Transoceanic jet stream crossings produce extended stretches of clear-air turbulence over the open Pacific.
• Oceanic Convection: Isolated thunderstorms over warm Pacific waters can develop away from radar coverage, catching flights off guard.
• Mountain Wave Turbulence: The Sierra Nevada produces the well-known Sierra Wave, one of the strongest mountain wave systems in North America.

When Is This Route Bumpiest?

For the smoothest possible ride on this route, aim for spring, early summer, summer, early fall, or fall. These seasons tend to be more stable, especially over the mountainous regions. Winter, late summer, early spring, and spring are typically bumpier. This is because stronger jet streams in the winter can create more clear-air turbulence over the ocean and the plains. Also, the temperature differences between the mountains and surrounding air are greater in winter, creating more intense mountain wave turbulence.

Tips for This Flight

If you're concerned about turbulence, booking a morning flight often provides a smoother experience because the atmosphere tends to be more stable earlier in the day. Any turbulence you do encounter on this route will likely feel like driving on a bumpy road or a brief roller coaster dip. Choosing a seat over the wing offers a more stable ride, as it's closer to the plane's center of gravity, and staying well-hydrated can help you feel more comfortable. Remember that the pilots and crew are highly skilled and prepared to handle any situation, so try to relax and enjoy the journey.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.