Significant Weather Chart

Last update July 28, 2000

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For weather briefings we use some meteorological maps made for aviation. Here you can see a "Significant Weather Chart" of Europe. It forecasts the meteorological conditions important to know for flights higher than about 3000 meters above mean sea level (AMSL). Students used it to plan a flight from Zurich to Bodö (indicated by the thick straight line in the middle of the map). The thick curves designate jet streams. Cloudy areas go along with description boxes about hazards for aviation, eg icing or turbulences. We can also see the altitudes of the stratopause (about 400 hectofeet AMSL), clean air turbulence areas (bordered by dashed lines) and a volcanic eruption in Sicily.