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11 Dec 05:32 UTC: First to report: EMSC after 8 minutes.
11 Dec 05:37: Magnitude recalculated from 3.3 to 4.5. Hypocenter depth recalculated from 4.0 to 5.0 km (from 2.5 to 3.1 mi). Epicenter location corrected by 2.5 km (1.5 mi) towards SSW.
Update Fri, 11 Dec 2020, 05:45
Light magnitude 4.5 earthquake 2 km north of Fortuna, Costa Rica
4.5 quake COSTA RICA 10 Dec 11:24 pm (GMT -6)
A very shallow magnitude 4.5 earthquake was reported late at night near Fortuna, Provincia de Guanacaste, Costa Rica.
According to the European-Mediterranean Seismological Centre (EMSC), the quake hit on Thursday 10 December 2020 at 11:24 pm local time at a very shallow depth of 5 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.