The .awa file will get built into the .res file as mentioned above. If you place the .awa file in the Aces High II/ahiiterr folder, it will override the weather that was built into the .res file. This gives you a way to test your weather without having to keep rebuilding your terrain.
Below is an example of a weather file for a 256x256 mile map. I'm going to insert some comments and there will be word-wrapping problems. You will have to re-assemble it in Notepad to actually use it.
72,3600,30,132000,1000,2,1,0,2,1000,1000,1000,3000,3000,3000,0,15000,0,132000,0,0,5280,0,491040,0.500
First line (Layer 1) is a "dead" line. Every time I start the Cloud Editor (CE) this first layer gets changed. I work with a copy in the CE, then open Notepad, delete this first line and then Save As myterr.awa.
0,0,10,132000,1000,8,8,100,100,1000,1000,1000,3000,3000,3000,0,16500,0,132000,0,0,0,0,316800,0.500
High altitude cirrus clouds that start immediately.
0,8928,15,160000,500,8,12,0,3,15000,500,10000,20000,800,15000,-176880,2250,143880,384120,0,-66000,20142,0,117080,0.800
0,8928,15,160000,500,8,12,0,3,15000,500,10000,20000,800,15000,219120,2250,79200,-250800,0,-300960,90838,0,-76563,0.800
0,8928,15,160000,500,8,12,0,3,15000,500,10000,20000,800,15000,-38280,2250,-231000,-135960,0,366960,-111385,0,-41313,0.800
The next 3 layers are low scud also starting immediately. They will restart as the rows in the finial layers are ending.
5400,5328,30,320000,4000,8,14,2,4,9000,3000,9000,11000,5000,15000,-161040,12000,236280,390720,0,-66000,64565,0,390701,1.000
5400,5328,30,320000,5000,8,14,2,4,9000,3000,9000,11000,5000,15000,274560,12500,33000,-260040,0,-295680,298223,0,-260536,1.000
5400,5328,30,320000,5000,8,14,2,4,9000,3000,9000,11000,5000,15000,-102960,12500,-261360,-135960,0,370920,-370989,0,-138503,1.000
These 3 layers are cumulus clouds designed to start as the first row of scud is disappearing.
14400,7128,45,480000,500,8,14,0,3,8000,1000,6000,18000,2000,16000,138600,14000,265320,134640,0,-370920,445665,0,164916,0.750
14400,7128,45,480000,500,8,14,0,3,8000,1000,6000,18000,2000,16000,154440,14000,-223080,-394680,0,26400,-31610,0,-474147,0.750
14400,7128,45,480000,500,8,14,0,3,8000,1000,6000,18000,2000,16000,-267960,14000,-38280,211200,0,331320,-400747,0,255376,0.750
The final 3 layers are altostratus and will begin to form as the first rows of cumulus disappear.
The entire process runs for 6 hours then starts again.