--- /home/matt/mc-dev-private//net/minecraft/server/BlockSnow.java	2015-02-26 22:40:22.251608143 +0000
+++ src/main/java/net/minecraft/server/BlockSnow.java	2015-02-26 22:40:22.255608143 +0000
@@ -85,6 +85,11 @@
 
     public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
         if (world.b(EnumSkyBlock.BLOCK, blockposition) > 11) {
+            // CraftBukkit start
+            if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockFadeEvent(world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), Blocks.AIR).isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
             this.b(world, blockposition, world.getType(blockposition), 0);
             world.setAir(blockposition);
         }