weather2-1.12.1-2.5.5-a.jar

Biomes O Plenty grass and dirt, all types are contained in one ID
biomesoplenty:grass
biomesoplenty:dirt
type defined by index :0 :1 :2 etc
bop grass or dirt lifted up by tornado fall on earth always with index 0

e.g. if it Sandy Grass Block(grass:3), it turn into Spectral Moss (grass:0)
if it Sandy Dirt (dirt:1) it turn into Loamy Dirt (dirt:0)

It happens since 1.8.9 I think, when Corosauce attempt to reduce lag during a tornado.