A 7.6 magnitude earthquake struck off the coast of Costa Rica at 8:42 a.m. on Sept. 5, according to the U.S. Geological Service.
The earthquake, located about 90 miles west of Costa Rica's capital San Jose, was originally measured as a 7.9, but reduced after a review by seismologists.
A tsunami warning is in effect for Costa Rica, Panama and Nicaragua, according to the Pacific Tsunami Warning Center. There is a chance that Hawaii could reach tsunami watch or warning status.
"An earthquake of this size has the potentioal to generate a destructive tsunami that can strike coastlines in the region near the epicenter within minutes to hours," the agency said.
An earlier Caribbean-wide tsunami watch was sent out as a mistake and subsequently cancelled.
Here's a map from USGS:
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This is a developing story.