I read with interest an article about two Marines struck by lightning while working on an aircraft on the flight line (on the ground). They had already stopped work and were leaving the field after they had received notification that lightning strikes were reported about 5 miles from their location. One is dead, the other is on life support.
This is a stern warning to our tour guides as well as our crew. We are on a large metal ship on a large river. Witnesses have reported seeing lightning strike the ship in the past.
NOAA Weather says lightning can strike as much as 10 miles from the storm that produced it even if it is clear at the point of the strike.
Take lightning reports seriously. Do not allow visitors on deck when lightning is reported in the area. A few minutes delay is a small price to pay for what could be a disaster.
Safety first, always. Life can't be replaced.