Quote Originally Posted by Estellios View Post
Garuda and the Ixal were always based in Coerthas.

As for Garuda's winds bringing snow, Coerthas is a high altitude area and heavy winds lowering the temperature even further probably lowers the temperature enough for snow.
The primals are based wherever they are summoned, which is why in the story Titan and Ifrit can be summoned in the Howling Eye, The Howling Eye has always been in Coerthas.