M6.1 (M(auto)) earthquake, 0km deep, near -28.3, -53.8. Shakes 1 tracked business to ≥ MMI IV — strongest est. MMI V (moderate — felt by all, little/no damage) at gas pipeline P3538 (50km). Watch the named operators for production-disruption headlines. Confidence — occurred 60%, intensity 72%, hits ticker 30%.