A magnitude 6.3 earthquake shakes New Zealand’s South Island and prompts coastal authorities to issue a tsunami warning and evacuation guidance. Multiple outlets report that civil defence and emergency management agencies instruct people in potentially affected coastal areas to evacuate, citing the risk of damaging or unpredictable tsunami surges. Coverage notes strong shaking in parts of the Upper Clutha and around Wanaka, and that warnings are issued for specific coastal regions, including Fiordland. One report also describes the warning being later downgraded or lifted, indicating the situation evolves after the initial alert. Another outlet states the tsunami warning is tied to the quake and that evacuation orders are made to keep residents away from shoreline areas while officials assess conditions. Across reports, the quake triggers immediate emergency responses, with agencies urging prompt movement away from coastal zones and advising that the timing and size of any waves cannot be precisely predicted. The overall reporting focuses on the earthquake’s impact, the issuance of tsunami-related alerts for coastal communities, and subsequent updates to the warning status.