Off-road weather safety
Off-road riding takes you far from shelter, often with no cell signal. Weather that is a nuisance in town can be dangerous on the trail. These are the hazards that matter most and how to read the forecast for them.
Watches, warnings and advisories
The National Weather Service uses three main levels. A watch means conditions are favorable for a hazard to develop, so stay alert and have a plan. A warning means the hazard is happening or about to happen, so act now. An advisory covers less serious conditions that are still a nuisance or risk. X4D shows active alerts on every area page and rates an area No-go during warnings for flash floods, severe storms, high wind, dust storms, extreme heat, red flag fire conditions and winter storms.
Lightning
Open machines such as side-by-sides without hard metal roofs, ATVs and dirt bikes offer no protection from lightning, and ridgelines and open desert are exposed places to be. The National Weather Service's advice is simple: when thunder roars, go indoors. A hard-topped, fully enclosed vehicle is a reasonable shelter if no building is near. Mountain and desert thunderstorms often build in the early afternoon, so plan to be off high and exposed ground by then.
Flash floods
Flash floods are among the deadliest hazards for off-roaders, especially in desert washes, canyons and low-water crossings. Rain falling miles away can send a wall of water down a dry wash under a clear sky. Never camp in a wash, and never drive into moving water. It takes surprisingly little: about a foot of moving water can float many vehicles. The NWS saying is turn around, don't drown.
Heat
Desert and dune riding in summer can push air temperatures well above 100°F, with sand and rock hotter still. Carry more water than you think you need, ride early and late, and watch for signs of heat exhaustion: heavy sweating, weakness, nausea and headache. Heat is also hard on machines; watch engine and belt temperatures and give equipment time to cool.
Wind and dust
Strong gusts raise dust that can drop visibility to near zero within seconds, and they reshape sand dunes, creating sharp drop-offs. In high wind, slow down, keep spacing between riders and pull completely off the route if visibility collapses. Wind also makes fire behavior extreme, so obey fire restrictions; a hot exhaust or a spark from a chain can start a wildfire in dry grass.
Cold and snow
Wind chill on an open machine is brutal: riding at 30 mph in 35°F air feels far colder. Dress in layers, protect hands and face, and remember that shaded sections can hold ice long after the sun has melted the rest of a trail. At high elevation, snow can fall in any month.
Before you go
- Check the forecast and alerts for the area and the route in and out.
- Tell someone where you are going and when you will be back.
- Carry water, food, a first aid kit, layers, a light and recovery gear.
- Consider a satellite messenger or personal locator beacon where there is no cell coverage.
- Turn back early. The trail will still be there next weekend.