Question 1

Is turbulence dangerous?

Accepted Answer

Modern aircraft are engineered to handle even the heaviest turbulence. Turbulence is uncomfortable, but not a structural threat. Pilots can change altitude or routing to find calmer air.

Question 2

Which times of day are smoothest?

Accepted Answer

Early morning and night flights tend to be smoother — thermal currents from solar heating can cause mild bumps on afternoon departures.

Question 3

Why are there light bumps at cruise altitude?

Accepted Answer

At cruise altitude (around 10-12 km), wind shear from the jet stream can produce brief clear-air turbulence. It usually lasts a few minutes; the pilot turns on the seatbelt sign, sometimes adjusts routing.

Question 4

How reliable is this forecast?

Accepted Answer

The forecast is computed from the winds of the same global weather model airlines use for flight planning. No weather forecast is 100%; treat this as direction, not a guarantee.

Question 5

How do pilots know about turbulence ahead of time?

Accepted Answer

Before each flight, pilots get a wind map briefing, ICAO SIGMET (significant meteorological advisories), and pilot reports (PIREPs) from other aircraft. In flight, they stay in active contact with ATC and nearby aircraft.

Tokyo → San Francisco Turbulence Forecast

Forecast

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FAQ

Tokyo → San Francisco Turbulence Forecast

Forecast

Route facts

Other flights on this route

FAQ

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