M 4.9 earthquake: Indian Ocean (Madagascar) — December 23, 1977

M 4.9 earthquake: Indian Ocean (Madagascar) — December 23, 1977. Epicenter 1299 km SE of Tôlanaro, depth 33 km, 16:30 Local (1977-12-23 12:30 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Indian Ocean (1299 km SE, Madagascar) — -34.392, 55.055

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