Bersallis III was a planet within Federation space and, until 2369, home to a Federation colony.
The planet was subject to violent firestorms every seven years. The firestorms would form when solar flare radiation from the planet's sun reacted with high energy plasma that was present in the planet's atmosphere.
Although the next firestorm was not expected until 2370, in 2369 an unusually large and fast-moving firestorm overwhelmed the colony's defenses established for that purpose. The USS Enterprise-D was dispatched to the planet to evacuate the colonists before the firestorm destroyed the colony.
Lieutenant Commander Nella Daren led several away teams to the surface to establish a barrier using thermal deflector units, a technique she was familiar with through previous experience. The mission was ultimately successful and the 643 colonists were evacuated but eight members of the away team were lost. (TNG: "Lessons")
Inhabitants
- Bersallis III colonists