Some dogs aren't afraid of storms while others are. Is your dog afraid?
Mauser doesn't like storms and hids underneath our son's bed until the storm is over.

Sox is the same, hates them so much She shakes like crazy and tries to hide anywhere she can, normally under something or behind it, we now have barriers up around the house to stop her getting into dangerous wholes as once she tried to get behind the kitchen appliances

Junior is getting almost crazy when storms hit us. He's so afraid I fear he'll have a heart attack. The doggie we have in the street and we take care of him is just the same. Very scared when we have storms.

Puky hates storms. Whenever we have a storm she jumps in my arms and shivers. She sometimes cries too.
She was found during a storm so i don't blame her for that! It must be awful for her...

Shelby isn't bad, she tries to chase the thunder, so I have to keep her inside when I see a storm approaching.

Coco isn't affraid of Thunderstorms at all much but whenever the lights go out he looks at me like 'Okay, Who turned out da lights' then he comes and sits right next to me and follows me around the apartment while I look for flashlights or candles. Once the lights are back on then he's fine. One thing he will NOT do is go out too potty if it's raining; I have to go out with him and then he just stands around 'trying to find a spot' I HATE WHEN HE DOES THAT!!! ugggh!

i have no idea how he reacts to storms. he never 'lived' through one until now

Suki, our Pekingese, is scared to death of storms. I have to carry her around with me if we have areally bad thunderstorm. She shakes like it's the end of the world. Powder Puff, our Pomeranian, isn't bothered at all by them.