A quake estimated at 3.8 magnitude took place at 9:20 p.m. at a point about 4.6 kilometers east northeast of Nosara on the far Pacific coast, said the Laboratorio de Ingeniería Sísmica. That is about three miles. That was near where a 7.6 magnitude quake took place Sept. 5. Since then thousands of smaller quakes have taken place in the area. There also was a 2.9 magnitude quake at Vara Blanca north of the Central Valley.
The Isla Calero quakes took place between 10:06 a.m. and 8:08 p.m.