Okay I finally got a Routing that would show an "Reverse Isochrone" what is different now? I don't know why it worked this time. The "Show colored TWS" was also checked. Now that I have checked to "Reverse the Isochrone" I cannot uncheck it, that function is greyed out. I can only show or not show both the isochrone and the reverse isochrone.
How do I think about the "weather risks" of a Reverse Isochrone?
1. Do the wider distances between lines show the faster route towards the destination
because they are the paths that have the most wind
2. Where there is change and the wind
drops along a line or ridge, the isochrones change direction and become closer together, the wind has dropped and changed direction, this might be a place to avoid depending on where you want to go.
3. Are there any general rules about Reverse Isochrone?
See attached example, I think the grey blob is from "Showing colored TWS" at the same time. Before I created the Routing I screwed around with the <Advanced Tab>
1. Divergence to 58% (which is what?)
Modification checked Use this Scenerio, then
3. Setting the date and time for the change.
4. Setting Forecast
wind to 90% of the forecast
5. Offset grib forecast 1 hour
Was this the reason the Reverse Isochrone worked?