Hi Nick, not sure what is happening but I am getting wildly different optimized routes from different runs that should have been identical. The image below shows the outcome of three different runs, each using the Ensemble function. The two routes furthest west were UM model generated routes from a run that included ECMF, GFS and Access gribs. One with the Copernicus current data included, one with it excluded. Surprisingly, removing the current appears to have no effect. I then did a run using the Ensemble function with only the UM and Copernicus data included but current increased to 200%. That produced the route furthest to the East. I then set the current back to 100% and that produced the intermediate route, avoiding the current. I was expecting this last result to overlay the result from the first run. As you can see I am preparing for the Gold Coast race tomorrow....

Not sure if this works but below is a link to an image on Dropbox:

Last edited by Edward C-H (8/02/2025 9:08 pm)