Weather control grid
- Federation term for satellite networks used to manipulate planetary weather (TNG: "The Mind's Eye", "True Q", "Sub Rosa", "Force of Nature"; DS9: "Let He Who Is Without Sin...")
- Primary purpose is to avert major loss of life from significant meteorological events by dispersing them safely during early stages of their manifestation (TNG: "True Q")
- Potentially derived from Risan technology, as the Risan control grid existed pre-Federation (ENT: "Two Days and Two Nights")
- Federation planets known to have weather control grids installed:
- Caldos II (TNG: "Sub Rosa")
- Earth (TNG: "True Q")
- Galor IV (Novel: Immortal Coil)
- Hekaras II (TNG: "Force of Nature")
- Risa (TNG: "The Mind's Eye"; DS9: "Let He Who Is Without Sin...")
- Non-Federation planets known to have an analogous system:
- Ab-Tzenketh (Novel: Rough Beasts of Empire)
- Eerlik (SCE Short Story: "Fatal Error")