SIGWX and wind charts
9 min read
Significant weather charts
A forecast picture of the weather that matters, valid at one time (often 00, 06, 12 and 18 UTC):
High level charts: about FL250 to FL630. Medium level: about FL100 to FL450, for some regions. Low level: below FL100 or FL150, made nationally.
Jet streams: thick arrows drawn where the core speed is 80 kt or more, with the core speed and level, and the depth of the strong wind.
IN THIS LESSON
- Wind and temperature charts
- In FL340
Read the whole lesson with FL340 Pro.
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