A major fire breaks out in Swansea, with thick dark smoke rising from the scene and visible from miles around, according to multiple outlets. Smoke clouds are reported to billow high above the city centre, prompting alerts for nearby residents. WalesOnline and other reports say people in the vicinity are urged to keep doors and windows closed due to the smoke. The BBC reports that a road in Swansea is closed as emergency services respond to the incident, reflecting the impact on local traffic and access near the blaze. ITV News and other coverage describe the fire as occurring near the city centre and highlight the extent of the visible smoke. The reports do not agree on the specific cause or the full range of affected buildings, but they consistently focus on the scale of the blaze, the heavy smoke, and the disruption to roads and public advice for those nearby. Emergency responders are present at the scene as authorities manage the situation and monitor conditions.