There are several synonym words that can be used instead of high speed wind stream. One such word is jetstream, which refers to the fast flowing narrow air currents that are found at high altitudes. Another term that can be used is gale-force winds, which are strong and gusty winds that blow at a speed of 34 knots or higher. Cyclonic winds, which are rotating winds that occur in low-pressure zones, can also be used as a synonym for high-speed wind streams. Finally, the term strong wind currents may also be used to describe the fast-flowing winds that blow across a particular region.