There is a moment where weather stops being weather and becomes climate, or when habit becomes culture. Two weather buoys, several atmospheric conditions, a few plants and the arch of heaven discuss this transition. Anna Ialeggio's Whatever Signifies the Firmament is a radio drama in four parts, taking its cues from classic radio narrative, the possible effects of transmission on storytelling, the cyclical nature of weather itself, and rampant (though affectionate) anthropomorphicisms. Time staggers on. Or loops back around to cut the theory off at its knees.