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EchoMap v3.0
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7.4.7 How to read Graphical Temperature Dew-point Spreads
When you request an area Metar the third page layer you receive
is the temperature/ dew point spread. This is particularly useful to
find areas where fog is likely to exist.
The bars are color coded to show the likelihood of fog.
Green = 11 or more degree spread
Yellow = between 7-10 degrees
Red = 6 degrees or less
7.4.8 How to View Weather Overlays
There are five weather overlay options that you can scroll through
in flight with the Enter key including one
that removes all weather
overlays entirely. Only available weather overlays will be
accessible as you step through the cycle. The current overlay is
depicted in the wx indicator (T/DP in above picture).
• NexRad Radar
• Ceiling, Visibility and Precipitation
• Wind Speed & Direction
• Temperature Dewpoint Spreads
• No weather information