Complex sentence: Similar in nature, the 1926 earthquake which rumbled the city of Horta, in early-April (5th), where damages were reported in Flamengos, Ribeirinha and Conceição.
Split into simpler sentences: Similar in nature, the 1926 earthquake rumbled the city of Horta, in early-April. On April 5, damages were reported in Flamengos, Ribeirinha and Conceição.