Any suggestions on training my dog not to be afraid of thunderstorms?
Get one of those commercial recordings of thunderstorms. Have your dog sit or lie down and give him a treat. Turn on the recording, keeping the volume low, and give the dog another treat when the thunder sounds. Increase the volume gradually, giving the dog a treat or praising him each time you do so. Finally, reduce the sound gradually. When a real storm occurs, have the dog sit or lie down and reward him with a treat when he does not show he’s afraid. If his fear behavior continues, ignore it, but don’t discipline him.