aviationweather.gov

  1. Aye Effaar

    Can anyone explain the legend on the LLWS GFA Chart?

    I like the aviationweather.gov weather details and it's my first stop when looking for pre-flight. The one chart I can't understand is the LLWS chart as part of the GFA tool. I get it that the further to the right in the color scale is "bad", but can anyone explain what these numbers mean?
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