We were at altitude 2674m on a mountain ridge when we noticed that the pole with indication signs for the trails was vibrating. The same was with the digital camera and the hiking poles. We understood that there was electricity in the air. However, the happening was strange because though the sky was covered, it was snowing, and not heavily. Besides, there were no lightnings, but we could hear from time to time thunders. I was wondering if there was any chance of being struck and also, if possessing metal objects might increase the chances.