Even Nathan came into my bed last night, the weather was horrendous.
I have my bible with me (the babywhisperer solves all your problems') and this is Tracy's advice::
Comfort and reassure your child, and encourage him to talk about the dream if he rememners the specifics. Don't minimize his fears the dream is very real to him. Soothe him with lots of cuddles, even lie with him for a while, but don't take him into your bed.
To prevent future episodes, figure out what might be stressful or fear inducing and avoid daytime encounters with it. Stick to your regular bedtimes and wind-down rituals. If your child is afraid of 'monsters' give him a night-light and check under the bed.
Nathan is scared of burglars (after an aquaintance decided to tell me the whole scary burgular story in front of him, even after I asked her to be careful what she said, and could she tell me later, I knew that it would scare him) So, every night, at bedtime, he comes with me to lock all the doors and check the windows. It is good for our security anyway as I am her alone during the week, but Nathan has to do it for his own peace of mind.
Niki, I hope that your LO was scared by the awful weather last night and hopefully it is temporary.