Think of a Jet stream as a fast-moving river of air. It is generally defined by wind speeds of 50 knots or greater with the strongest wind contained in the core of the jet stream. They form along boundaries between hot and cold air. Since these hot and cold air boundaries are most pronounced in winter, jet streams are the strongest and farther south during the winter. That also means jet streams are weaker and farther north in the summertime. Troughs will most likely have clear air turbulence as

城達也ジェットストリーム🌹特に『JET STREAM』のパーソナリティは、1967年7月の放送開始から1994年12月まで2年半（7387回）に渡って務めたことから、城の代名詞的番組と捉えられた。 🍎＃過ぎし日のスナップ 多いに楽しませていただきました | Tokyo Capl