St. Louis to Chicago Midway Turbulence Forecast

STL → MDW · 251 miles · ~1h 0m

What to Expect

Your upcoming flight from St. Louis (STL) to Chicago Midway (MDW) travels a relatively short distance northeast, crossing a few geographic areas known for specific types of turbulence. The Mississippi Valley, especially on warmer days, can see convective turbulence; think of it as air bubbling up like it's boiling. As you approach Chicago, you'll be crossing the Great Lakes where lake-effect turbulence can occur, especially in cooler months when cold air moves over the warmer lake waters. Also, the Ohio Valley's frontal systems can sometimes cause turbulence. Remember, pilots are highly trained to navigate these common weather patterns, and they constantly monitor conditions to ensure a safe and comfortable flight. They often adjust altitude slightly to find smoother air. These are all normal occurrences for this route.

The flight between St. Louis and Chicago Midway crosses the Mississippi Valley, a corridor where warm, moist Gulf air collides with cooler continental air masses. This convergence zone spawns squall lines and mesoscale convective systems that can stretch hundreds of miles, creating broad areas of moderate-to-severe convective turbulence.

Turbulence Factors on This Route

• Convective Turbulence: The Mississippi Valley is a breeding ground for squall lines and mesoscale convective systems that produce widespread turbulence.
• 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?

The fall and winter months generally offer the smoothest flights on this route, as the air is more stable, and there's less convective activity over the Mississippi Valley. Summer and early fall can be a bit bumpier, as warmer temperatures increase the chance of convective turbulence, and lake-effect turbulence can begin as early as late summer. Spring, early summer, late fall, and early winter are the most prone to bumps, with the potential for a mix of convective, lake-effect, and frontal turbulence as weather systems transition.

Tips for This Flight

If possible, consider booking your flight for earlier in the day, as the atmosphere tends to be more stable before the day heats up. Any turbulence you experience on this route is most likely to feel like driving on a slightly bumpy road, or perhaps a few stronger bumps similar to hitting a pothole. To help stay relaxed during the flight, consider choosing a seat over the wing, where the motion is typically less noticeable. Remember to stay hydrated, and focus on slow, deep breaths to help calm any nerves; you'll be in Chicago before you know it.

Get Your Forecast

Related Routes

See all routes from St. Louis or to Chicago Midway.

More from St. Louis

More to Chicago Midway

Forecasts based on NOAA HRRR and GFS atmospheric model data.