Hiking in a storm: 7 good reflexes when the weather turns bad
During this season, outings get longer, routes go higher, and the weather becomes more volatile. When hiking, the real problem with a thunderstorm is not just the rain: it's lightning, wind, loss of visibility, and bad decisions made too late. The right reflex is not to be tough, but to anticipate, give up in time, and know what to do if the sky darkens while you're walking.
Why thunderstorms deserve more than a simple "we'll see"
When hiking, thunderstorms primarily punish approximation. Many hikers still think they'll "have time to get back down," that "it will pass by," or that a little rain isn't a real problem. However, the danger isn't just about discomfort. The FFRandonnée reminds us that the first rule is to anticipate, and that the risk exists not only in the mountains, but more broadly outdoors, whenever one is exposed on a trail, a ridge, an open area, or near isolated elements.
The real trap is that thunderstorms often arrive after a period of still "acceptable" weather. So, we continue walking a little too long, postpone the decision to turn back, and then find ourselves improvising at the worst possible moment. This is precisely what serious outdoor articles must combat: not the fear of bad weather, but the culture of good timing.
Reflex 1: Really check the weather before you leave
The first reflex is nothing spectacular: check alerts and forecasts before putting on your shoes. Météo-France emphasizes the importance of staying informed, and we explicitly recommend checking before hiking, and then postponing or canceling a departure if the situation warrants it. This is basic, but also the most often neglected action when an outing has been planned for a long time.
In practice, this means one simple thing: if the weather forecast is unstable, adapt the day's ambition. Start earlier, take a shorter route, have a clear fallback option, and identify safe shelters or refuges in advance. The right level of caution is not to give up at every cloud, but not to build an entire day on the assumption that everything will be fine "by default."
Reflex 2: Don't wait until you're in the thunderstorm to decide
The second reflex is to move before you're trapped. At the first serious signs, the goal is no longer to "stick to the schedule," but to get out of the most exposed areas. In the mountains, this means leaving summits, ridges, and crests. The Lightning Protection Association emphasizes this point: you must move away from peaks and ridges without delay as soon as a thunderstorm seems imminent.
It’s a simple, but decisive rule. The longer you delay, the less leeway you have. A descent started ten minutes too late can be enough to turn a manageable situation into a forced wait in bad terrain, without real shelter, with fatigue and stress on top of that. In hiking, many errors come less from a lack of knowledge than from a too-late refusal to change plans.
Reflex 3: Forget about false safe shelters
When the sky darkens, instinct often pushes us towards the first apparent "shelter." However, not all shelters are equal. Taking shelter in a sturdy building, staying away from trees and watercourses, and staying informed are essential. A metal car also makes a good Faraday cage-type shelter, provided it is not a convertible.
On the other hand, an isolated tree, a small group of trees, a sheet-metal roof shed, a ridge, or a small cave taken without precautions are not reliable solutions. In the mountains, a crevice or a small cave can expose one to other electrical effects if one leans improperly or stays too close to certain walls. In other words, a good shelter is not just a place "where you get less wet." It's a place where you truly reduce your exposure to lightning.
Reflex 4: Stay away from isolated trees, metal, and high points
It's very clear: if a thunderstorm catches you on the trail, you must move away from any isolated tree or small group of trees, leave ridges, place metal objects like poles or ice axes far from you, and stay away from pylons, fences, or metal structures. This is a point many still underestimate, especially when they remain focused on the rain and not on the electrical risk.
In open terrain, the logic is the same: avoid becoming the prominent point in the landscape. In wooded terrain, it's not about running to hug a tree trunk, but rather moving away from trunks and low branches. Caution does not mean seeking the most visually reassuring setting, but reducing situations where your body, equipment, or position increase exposure.
Reflex 5: Adopt the correct waiting position
If no safe shelter is quickly accessible, you must wait properly. The recommended position is to crouch, feet together, legs bent, rather than standing, lying down, or with legs spread apart. If possible, insulate yourself from the ground with appropriate support, without leaning against a wall.
This point is counter-intuitive for many practitioners, who would tend to lie down to "make themselves small" or remain standing to quickly get back on track. This is precisely the mistake to avoid. You should also maintain a distance of at least five meters between hikers to limit the risk of current transmission by lateral effect. In these moments, the objective is not comfort; it is the maximum reduction of exposure.
Reflex 6: Don't run haphazardly
When nervousness rises, many start running, taking large strides, or rushing without logic. MonGR, on the contrary, reminds us not to run, take large strides, or stand with legs apart. If an emergency movement is necessary, it must be done in small steps, crouched, to limit ground-related effects.
This advice summarizes the spirit of managing outdoor thunderstorms: slow down panic to make a sound decision. In outdoor safety, many situations worsen because one attempts a disorderly "last effort" instead of choosing a less elegant but safer posture.
Reflex 7: After the storm, don't trivialize what just happened
When the storm moves away, we often want to continue as if nothing happened. However, caution does not end with the last thunderclap heard. MonGR also emphasizes paying attention to current transmission in the ground near an impact and recommends consulting a doctor after significant exposure. If a person is struck by lightning, immediate emergency action is required.
On a less dramatic note, it's also important to calmly reassess the situation: Did you delay too long? Was the route poorly chosen for the day? Was the departure too late? It is often in this simple review that safer practices for the future are built.
What to remember
When hiking, a thunderstorm is not managed with pride. It is managed with anticipation, humility, and sound decision-making. Checking the alerts, accepting to shorten the trip, leaving ridges early, avoiding false shelters, crouching properly if you are trapped: these are simple actions, but they change everything when the sky turns.
Spring makes you want to lengthen your outings. That's precisely why these reflexes need to be brought back into focus. More unstable weather doesn't prevent you from hiking; it simply requires you to hike with a little more clarity. And outdoors, that clarity often remains the best equipment.