Possible abnormal behavior that could indicate imminent earthquakes includes chickens flying atop trees, fish leaping out of water or toads moving in a group.
A strong temblor with a magnitude of 4.8 shook residents in several communities in the northwestern province of Guanacaste at 7:12 a.m. Four hours later, a magnitude-4.9 was registered near the border with Panama, according to the University of Costa Rica’s National Seismological Network.
The Volcanological and Seismological Observatory of Costa Rica (OVSICORI) on Thursday morning reported a magnitude-4.0 tremor off the Caribbean coast in Limón.
Nicaraguans awoke in a panic Monday morning when a magnitude-5.6 earthquake shook Managua, the capital, following temblors last week killed one, injured almost 40 and left another 2,000 with partially or totally destroyed homes.