lDeadly turbulence on Singapore Airlines flight from London to Singapore have highlighted the world’s most unstable air routes.
A 73-year-old man died of a heart attack and several other people were seriously injured after Singapore Air flight SQ321 suffered severe turbulence upon entering Thai airspace on Tuesday, causing an emergency landing in Bangkok.
The 211 passengers and 18 crew members who were on the Boeing 777 experienced a sudden descent of 1,200 meters in just five minutes, after an 11-hour flight.
Disturbances are classified on a scale ranging from “light”, meaning those that cause slight erratic changes in altitude, to “severe”, in which the aircraft is shaken violently.
Turbli used eddy dissipation rates (EDR) to classify the routes. The EDR measures the intensity of turbulence at a given point: 0-20 is light, 20-40 moderate, 40-80 severe and 80-100 extreme.
Thus, the 1,905 kilometer route between Santiago (Chile) and the Viru Viru International Airport in Santa Cruz (Bolivia) It is ranked first on the list, with an average EDR of 17.5.
The second most turbulent route is the short-haul flight (approximately 338 kilometers) between Almaty (Kazakhstan) and the capital, Bishke, with an average EDR of 17.4.
The flight from the Chinese city of Lanzhou to Chengdu (China) occupies third place in the ranking with an EDR OF 16.75, which is followed by Centrair (Japan) to Sendai (Japan), with an EDR of 16.58.
Ranking as the fifth most turbulent trajectory in the world is the 212-kilometer European route between Milan and Geneva, with an EDR of 16.3.
The list continues as follows: Lanzhou (China) – Xianyang (China); Osaka (Japan) – Sendai (Japan); Xianyang (China) – Chengdu (China); Xianyang (China) – Chongqing (CKG); and Milan (Italy) – Zurich (Switzerland).
The notable fact that six of the world’s ten most turbulent paths are routes in Japan and China is attributed to the high activity of the current in these regions, which disturbs the air, according to Turbli.
Likewise, mountain waves from the Swiss Alps, which refer to the wind that hits the mountains and creates choppy air, are probably responsible for the presence of two short-distance European routes on the list.
Strong turbulence occurs when air currents traveling at significantly different speeds come together.
This typically occurs at the edges of jet streams, over mountains, and in certain cloud storms.
This typically occurs at the edges of jet streams, over mountains, and in certain cloud storms.
For exampleturbulence on the Santiago-Santa Cruz route is generated by winds from the Pacific Ocean to the Atlantic Ocean that flow almost perpendicular to the Andes. The equator is also a region known for its turbulence due to strong updrafts and thunderstorm activity, Turbli said.
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The 10 most turbulent routes in America
- Nashville (BNA) – Raleigh/Durham (RDU)
- Charlotte (CLT) – Pittsburgh (PIT)
- Denver (DEN) – Puerto Vallarta (PVR)
- New York (JFK) – Raleigh/Durham (RDU)
- Warwick (PVD) – Syracuse (SYR)
- Atlanta (ATL) – Dulles (IAD)
- Pittsburgh (PIT) – Raleigh/Durham (RDU)
- New York (LGA) – Portland (PWM)
- Boston (BOS) – Syracuse (SYR)
- Boston (BOS) – Philadelphia (PHL)
The 10 most turbulent routes in Europe
- Milan (MXP) – Geneva (GVA)
- Milan (MXP) – Zurich (ZRH)
- Geneva (GVA) – Zurich (ZRH)
- Marseille (MRS) – Zurich (ZRH)
- Zgornji Brnik (LJU) – Zurich (ZRH)
- Nice (NCE) – Basel (BSL)
- Nice (NCE) – Zurich (ZRH)
- Yerevan (EVN) – Tbilisi (TBS)
- Basel (BSL) – Venice (VCE)
- Frankfurt am Main (FRA) – Caselle Torinese (TRN)
*With information from Bloomberg
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