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.
Without being there or knowing the territory, it is hard to know.
If it had been only the pole, and it had been vibrating visibly, I should have suspected that it was resonating with the wind. However, since you say that other, smaller, items such as cameras gave the same effect, it is pretty certain that the effect is electrical and does not involve vibration as such. I assume that you detected this tingling by touch?
If so, then there probably was lightning about, and charged clouds were moving overhead. It would have been wise in such conditions to move as far away as possible from anything likely to attract lightning. If, without touching a pole,such you felt any tingling, or you found your hair standing on end, then you should certainly crouch down, feet close together, arms about your knees, and not touching each other, unless you were able to get immediately into shelter. (Run, don't walk!)
The tingling is mainly caused by objects such as your pole or your body building up a charge strong enough to cause tingling little currents in the body. Those are harmless, but they are the sign that lightning is about to strike or nearly strike.
The fall of snow does not prove anything; ice particles can contribute to the build-up of static charges. Metal objects like cameras are minor risks, but long metal objects like rifles or aluminium walking sticks would be very dangerous. Also keep away from metal fences and wires.
Good luck next time too!
Jon
Without being there or knowing the territory, it is hard to know.
If it had been only the pole, and it had been vibrating visibly, I should have suspected that it was resonating with the wind. However, since you say that other, smaller, items such as cameras gave the same effect, it is pretty certain that the effect is electrical and does not involve vibration as such. I assume that you detected this tingling by touch?
If so, then there probably was lightning about, and charged clouds were moving overhead. It would have been wise in such conditions to move as far away as possible from anything likely to attract lightning. If, without touching a pole,such you felt any tingling, or you found your hair standing on end, then you should certainly crouch down, feet close together, arms about your knees, and not touching each other, unless you were able to get immediately into shelter. (Run, don't walk!)
The tingling is mainly caused by objects such as your pole or your body building up a charge strong enough to cause tingling little currents in the body. Those are harmless, but they are the sign that lightning is about to strike or nearly strike.
The fall of snow does not prove anything; ice particles can contribute to the build-up of static charges. Metal objects like cameras are minor risks, but long metal objects like rifles or aluminium walking sticks would be very dangerous. Also keep away from metal fences and wires.
Without being there or knowing the territory, it is hard to know.
If it had been only the pole, and it had been vibrating visibly, I should have suspected that it was resonating with the wind. However, since you say that other, smaller, items such as cameras gave the same effect, it is pretty certain that the effect is electrical and does not involve vibration as such. I assume that you detected this tingling by touch?
If so, then there probably was lightning about, and charged clouds were moving overhead. It would have been wise in such conditions to move as far away as possible from anything likely to attract lightning. If, without touching a pole,such you felt any tingling, or you found your hair standing on end, then you should certainly crouch down, feet close together, arms about your knees, and not touching each other, unless you were able to get immediately into shelter. (Run, don't walk!)
The tingling is mainly caused by objects such as your pole or your body building up a charge strong enough to cause tingling little currents in the body. Those are harmless, but they are the sign that lightning is about to strike or nearly strike.
The fall of snow does not prove anything; ice particles can contribute to the build-up of static charges. Metal objects like cameras are minor risks, but long metal objects like rifles or aluminium walking sticks would be very dangerous. Also keep away from metal fences and wires.
Thank you for your reply. We've been browsing the materials we have and we noticed there is written information warning about such dangers. In French, the phenomenon i described is called "gresillements":
*If a metal object is charged it can start to vibrate. The vibrations can be noticed in the form of the buzzing of bees.*
It may be also worth noticing the existence of the so-called St Elme lights ("Feux de St Elme"):
*Before or little after a storm, the air can be "so" charged that there's electricity between the air and the exposed objects. The air is ionised and there can be created blue sparks of length > 1cm.*
It is clearly written that "gresillements" and "Feux de St Elme" are alarming signs as there is danger of being stroke. Consequently, this means (and i enumerate, just for the case where someone might learn something new):
-avoiding summits, ridges. If up, getting down below as soon as possible;
-staying away from water springs, cables, i.e., any electrical conductor;
-keeping away from the body any metal (ice axes, crampons, carabiners, pitons, telescopic poles...). They do not attract lightning but they are excelent electrical conductors. Telescopic poles attached to the
backpack are also a potential danger, being higher, for direct lightning.
-looking for shelter, i.e., caves or rock formations in shape of isosceles triangles. To avoid being electrocuted, one should keep 2m distance away from walls, the top of the cave and other persons.
-taking the right position of sitting not directly on the ground but on a dry rope or the backpack.