java.io.EOFException: Unexpected end of ZLIB input stream
at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:240)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:158)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
at java.io.DataInputStream.readFully(DataInputStream.java:195)
at java.io.DataInputStream.readUTF(DataInputStream.java:609)
at java.io.DataInputStream.readUTF(DataInputStream.java:564)
at net.minecraft.nbt.NBTTagCompound.func_152448_b(NBTTagCompound.java:486)
at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:56)
at net.minecraft.nbt.NBTTagCompound.func_152449_a(NBTTagCompound.java:496)
at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:58)
at net.minecraft.nbt.CompressedStreamTools.func_152455_a(CompressedStreamTools.java:133)
at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:88)
at net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:83)
at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async(AnvilChunkLoader.java:89)
at net.minecraftforge.common.chunkio.ChunkIOProvider.run(ChunkIOProvider.java:69)
at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:92)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:118)
at net.minecraft.world.gen.ChunkProviderServer.func_186028_c(ChunkProviderServer.java:89)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:135)
at net.minecraft.world.World.func_72964_e(World.java:309)
at net.minecraft.world.World.func_175726_f(World.java:304)
at net.minecraft.world.World.func_180495_p(World.java:910)
at weather2.weathersystem.storm.TornadoHelper.tick(TornadoHelper.java:320)
at weather2.weathersystem.storm.StormObject.tick(StormObject.java:570)
at weather2.weathersystem.WeatherManagerBase.tick(WeatherManagerBase.java:138)
at weather2.weathersystem.WeatherManagerServer.tick(WeatherManagerServer.java:52)
at weather2.ServerTickHandler.onTickInGame(ServerTickHandler.java:92)
at weather2.EventHandlerFML.tickServer(EventHandlerFML.java:36)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_577_EventHandlerFML_tickServer_ServerTickEvent.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182)
at net.minecraftforge.fml.common.FMLCommonHandler.onPreServerTick(FMLCommonHandler.java:278)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:657)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Thread.java:748)

using Forge 1.12.2-14.23.4.2705 Minecraft Forge Rec

its this mod and on loading of NBT

Just renamed weather2 to weather2.old and it fixed the loop crash

There's an area in your world that is corrupt, my storm object is the first thing to touch the area, will likely crash your game even without my mod if you wander to wherever the corrupt area is.