Reno to Chicago Midway Turbulence Forecast

RNO → MDW · 1,676 miles · ~3h 51m

What to Expect

Reno to Chicago Midway is a mostly eastward flight across diverse terrain, meaning you might encounter a few different types of turbulence. Shortly after takeoff, expect the possibility of mountain wave turbulence as you cross the Sierra Nevada and then again over the Central Rockies; these bumps are caused by wind flowing over the mountains. As you leave the mountains behind and enter the Great Plains and Upper Midwest, clear-air turbulence (CAT) is possible. As you continue east, turbulence may be caused by lake-effect from the Great Lakes or convective turbulence as you cross the Mississippi Valley. Finally, you might experience frontal turbulence over the Ohio Valley as you approach Chicago. Experienced pilots are very familiar with these patterns and use sophisticated weather forecasting to navigate them skillfully.

Flights between Reno and Chicago Midway 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.
• Clear-Air Turbulence (CAT): The jet stream frequently meanders over the Great Plains, producing wind shear and clear-air turbulence at cruising altitudes.
• Lake-Effect Turbulence: The Great Lakes produce lake-effect convection and low-level wind shear from land-water temperature contrasts.
• Frontal Turbulence: The Ohio Valley is a preferred storm track where frontal boundaries and embedded convection create turbulence year-round.

When Is This Route Bumpiest?

For the calmest flight, aim for summer, early fall, fall, or winter. These seasons typically see fewer strong weather systems that trigger turbulence. In contrast, winter, spring, early spring, late fall, early winter, and early summer months can be bumpier. This is because the route's mountain wave turbulence is more common when winds are stronger and the air is colder. Additionally, convective turbulence (thunderstorms) is more prevalent in the warmer months as you cross the Mississippi Valley, and frontal turbulence is more common in the transition seasons over the Ohio Valley.

Tips for This Flight

Opt for a morning flight, as the air tends to be calmer earlier in the day, increasing your chances of a smoother ride. Any turbulence you do encounter on this route will likely feel like driving over a slightly bumpy road or a brief elevator dip. For extra comfort, choose a seat over the wing; this is usually the most stable part of the plane. Remember to stay hydrated and practice deep, slow breathing; this can help you feel more relaxed and in control, even if there are a few bumps along the way. The flight crew is well-prepared to handle any turbulence, and your safety is their top priority.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.