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1/19/2026 1:33 pm  #1


How to use Weather Models, my over simplified perspective

In my way back from S2H to the EU to get ready to the RORC Transat, I created this Excel, that I hope will help some to get started to gain confidence on which model to use and when. By no means I am a weather guru, but these are some of my leanings from my interactions with some of the best navigators there are.
If you are better at weather or see something you can improve please let me know. I would love to improve it.
Thanks

 

Last edited by Astolfo (Yesterday 2:36 pm)

 

1/21/2026 6:20 am  #2


Re: How to use Weather Models, my over simplified perspective

Astolfo
Thanks for putting this together, I for one find it very useful. All navigators will bring their own personal experience and preferences to rating weather models, but to start with these guidlines is definintely of value

Fergal.

 

1/28/2026 3:26 pm  #3


Re: How to use Weather Models, my over simplified perspective

I thought that it looked like a useful resource, but found myself wanting to add some entries such as the French Arome model. How might we build on this and turn it into a shared resource with multiple contributors?

 

5/26/2026 12:35 pm  #4


Re: How to use Weather Models, my over simplified perspective

I'd love to see this doc if it still exists, the link doesn't seem to work any more. Related question: if one downloads multiple weather forecasts (GFS, NAM, EU model) and then run a routing, which model does it use if the models differ greatly?

 

Yesterday 2:37 pm  #5


Re: How to use Weather Models, my over simplified perspective

Can you check again please? I do not know why Google keeps breaking the link.

     Thread Starter
 

Yesterday 2:43 pm  #6


Re: How to use Weather Models, my over simplified perspective

TomH wrote:

I thought that it looked like a useful resource, but found myself wanting to add some entries such as the French Arome model. How might we build on this and turn it into a shared resource with multiple contributors?

Can't you download and edit it? 
I am ok with other people contributing that was the goal, but I want to be able to approve the changes, before going public. I have tried the contributors and it failed because all of the sudden we had people "contributing" non-sense. 
If you have any ideas on how to do this, let me know.  

     Thread Starter
 

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