The World's Most Turbulent Flight Routes: A Rough Journey Ahead

By Ivan PetrenkoJan 18, 2024 10:56 AMNews
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Turbulent cloudy sky
Turbulent cloudy sky. Source: unsplash

It's no secret that turbulence is a leading cause of in-flight discomfort and, more critically, injuries. With over 145 serious injuries reported among US carriers since 2010, according to the Federal Aviation Administration (FAA), understanding and preparing for turbulence has become crucial for both passengers and flight operators. The recent unveiling of the most turbulent flight routes of 2023 by the turbulence tracking website Turbli offers a glimpse into the skies' more challenging journeys.

The Infamous Santiago to Santa Cruz Route Tops the List

Topping the list is the Santiago, Chile (SCL) to Santa Cruz, Bolivia (VVI) route. This 1905 km journey, stretching 1,029 nautical miles, retains its dubious distinction from 2022, being both the most turbulent route globally and in South America. Santiago's notoriety extends further, being recognized as the most turbulent airport worldwide.

Turbulence Rankings: A Global Perspective

Turbli's data provides insights into the routes most prone to turbulence. Using the Eddy Dissipation Rate (EDR), a measure of turbulence intensity recognized by the International Civil Aviation Organization (ICAO), Turbli categorizes turbulence levels from light to extreme. The top ten most turbulent routes feature diverse global locations, including Almaty to Bishkek, Lanzhou to Chengdu, and Milan to Geneva. Notably, Xianyang Airport in China appears thrice, indicating the region's turbulent nature.

Topography's Role in Turbulent Skies

Turbulence is primarily influenced by atmospheric conditions, including pressure variations, jet streams, and geographical features like mountains. Areas with complex topographies, such as mountain ranges or plateaus, tend to experience harsher weather conditions. This correlation is evident in the list, where airports near the Alps (Geneva and Zurich) and between the Loess and Qinghai-Tibet Plateaus (Xi'an Xianyang) feature prominently. Japan, with its mountainous terrain and jet streams, also sees multiple routes on this list, often affected by clear-air turbulence (CAT).

The Increasing Trend of Turbulence

Research from Reading University in the UK highlights a concerning trend: a 55% increase in flight turbulence from 1979 to 2020 on typical routes. This rise is attributed to greater wind shear in the jet stream, with climate change playing a significant role in escalating clear-air turbulence. Projections suggest a further 17%–29% increase in turbulence by 2100, underscoring a growing challenge for flight safety.

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