JStream

 Been reading about the Jet Stream, in National Geographic. The JS

is actually the boundary between the polar vortex and warmer regions

South.

                                                                  

                                                      

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https://www.netweather.tv/charts-and-data/global-jetstream#2023/07/08/0600Z/jetstream/surface/level/overlay=jetstream/orthographic=-6.72,57.59,712