A magnitude-5.9 earthquake struck near Te Anau, prompting a tsunami warning for New Zealand's South Island, later downgraded for areas from Milford Sound to Puysegur Point.

Initially assessed as a magnitude-6.3 earthquake, NEMA later revised that downward to a 5.9.

More than 17,500 people reported feeling the shaking nationwide.

An earthquake of magnitude 6.3 struck near the town of Te Anau on New Zealand's South Island, prompting authorities to issue a tsunami warning.