Vega From , joined Dec 1969, posts, RR:
Reply 2, posted (7 years 7 months 2 weeks 5 days 3 hours ago) and read 5908 times:
If you are flying inside the Jet Stream, there should be little or no turbulence. However this is not the case if you are flying on/through either boundary, where there can be (usually is) a difference in air layer speeds. When there are significant differences between Jet Stream air speed and it's surroundings, wind shear conditions can occur causing major turbulence.
BoeingOnFinal From Norway, joined Apr 2006, 476 posts, RR: 0
Reply 6, posted (7 years 7 months 2 weeks 3 days 12 hours ago) and read 5756 times:
Jetstreams are associated with great pressure and temperature differences, and the gradient close to the jetstream (temp. or pressure difference per unit of distance) is greater that further away. So when crossing or "catching" the jetstream, and sometimes in the jetstream itself, you can experience CAT (clear air turbulence).
PhilSquares From , joined Dec 1969, posts, RR:
Reply 7, posted (7 years 7 months 2 weeks 3 days 11 hours ago) and read 5751 times:
One of the keys about the jet is to be aware of where the trop is located. Flying +/- 2000 away from the trop will "generally" give you a pretty smooth ride. As CosmicCruiser pointed out nothing is certain regarding the jet, but there are some places to avoid if possible.