This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Long before anyone understood the aurora as a solar-terrestrial physics problem, the people who lived where it was visible most often built it into their explanations of the world. Several Indigenous peoples of the North American Arctic and Subarctic, including Cree and Inuit communities, described the lights in terms of the spirits of the dead, sometimes playing a game, sometimes guiding the living; Norse tradition associated the lights with the Bifrost, the burning bridge connecting the world of gods to the world of humans, and later Scandinavian folklore offered more specific, sometimes contradictory readings, from a good omen to a warning best not whistled at, since a whistle was thought to draw the lights closer than was wise. None of these traditions had access to the magnetosphere, but many of them correctly linked the aurora's frequency and intensity to the seasons and to something changeable happening far away, an intuition modern space weather science would eventually formalize.
The aurora's practical consequences on the modern, electrified world are large enough that a dedicated forecasting effort now exists for it, run in the United States by the National Oceanic and Atmospheric Administration's Space Weather Prediction Center. A strong geomagnetic storm does not just brighten and lower the aurora, pushing displays visible normally only from Alaska or northern Scandinavia as far south as the middle latitudes; it can also induce currents in long conductors, power grids, pipelines and undersea cables, that were never designed to carry them. The most extreme documented case, the Carrington Event of 1859, triggered auroras visible near the equator and set telegraph systems on fire in some stations, sparking operators' equipment even after they had disconnected their batteries, powered instead by the storm's own induced current. A storm of that scale striking the modern power grid and satellite fleet is one of the scenarios space weather forecasters explicitly plan around, which is why the same agencies that predict the aurora's visibility for tourists also issue geomagnetic storm warnings to utilities and airlines.
Aurora tourism itself has become a substantial seasonal industry across the high-latitude north, from Tromso and Iceland to Fairbanks and Yellowknife, built almost entirely around the same forecasting data: the eleven-year solar cycle sets the general odds for a given year, while short-range space weather forecasts, tracking specific coronal mass ejections as they leave the Sun, can narrow a strong display down to a window of a few days, turning what used to be pure chance into something closer to a plannable, if still never guaranteed, trip.