Maui to Seattle Turbulence Forecast

OGG → SEA · 2,640 miles · ~5h 47m

What to Expect

The Maui to Seattle route, heading northeast over 2640 miles, does cross some interesting weather patterns. Early in the flight, you'll be over the open Pacific, where both oceanic clear-air turbulence and oceanic convection can occur. The first is caused by differing air speeds clashing at altitude, and the second by heat rising off the ocean's surface. Later, as you approach the Pacific Coast, you might experience clear-air turbulence again, as air masses interact near land. Finally, as you near Seattle, the flight path crosses the Cascades mountain range, which can cause mountain wave turbulence, a predictable effect as wind flows over the peaks. Pilots are very familiar with all of these phenomena, and they are always monitoring conditions to ensure a safe and comfortable flight. They use weather reports and even reports from other planes to avoid any significant bumps.

The flight between Maui and Seattle passes over the Cascades, the volcanic mountain chain stretching from northern California through Washington. When moist Pacific air is forced up and over the Cascades, it creates both orographic turbulence and downstream wave activity. The terrain is especially steep near major volcanoes like Mount Rainier, amplifying the effect.

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 Cascades create lee waves and orographic turbulence, especially when Pacific weather systems push moist air over the range.

When Is This Route Bumpiest?

For the smoothest possible ride, aim to fly this route during the spring, early summer, summer, or early fall months. Conditions tend to be more settled over the Pacific, leading to fewer instances of oceanic convection. The late summer, early spring, fall, and especially winter months can be a bit bumpier. Winter brings stronger winds and more dynamic weather systems that can intensify clear-air and mountain wave turbulence, while late summer and early spring can see more convective activity.

Tips for This Flight

If you're concerned about turbulence, consider booking a morning flight, as the air is often calmer earlier in the day. Any turbulence you might encounter on this route would likely feel like driving over a series of small potholes or gentle waves in a boat, not usually anything alarming. To help stay relaxed, choose a seat over the wing, where you'll feel less motion, and remember to stay hydrated. Dehydration can amplify feelings of anxiety. Focus on taking slow, deep breaths, and trust that the crew is well-prepared to handle any situation.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.