Don't handle flammable materials in open containers. Stop tractor work, especially when the tractor is pulling metal equipment, and dismount. Tractors and other implements in metallic contact with the ground are often struck by lightning. Get out of the water and off small boats. Stay in your automobile if you are traveling.
Automobiles offer excellent lightning protection.
There are exceptions to this, however, as seen here . Seek shelter in buildings. If no buildings are available, your best protection is a cave, ditch, canyon, or under head-high clumps of trees in open forest glades. When there is no shelter, avoid the highest object in the area. If only isolated trees are nearby, your best protection is to crouch in the open, keeping twice as far away from isolated trees as the trees are high.