An earthquake of magnitude 6.4 struck the Gulf of California on Sunday, the U.S. Geological Survey (USGS) said.

Mexico’s civil defense office confirmed that there were no immediate reports of damage in the areas where the earthquake was felt, but recommended boats and the nearby coastal population take precautions due to possible currents in ports.

Shortly after the quake occurred, the U.S. Tsunami Warning system said there was no tsunami danger for the U.S. West Coast, British Columbia, or Alaska.

Small variations in sea water levels, of a few centimeters, may be detected in the region where the quake occurred, the Mexican civil defense office later said via Twitter.

The quake struck at a depth of approximately 10 kilometers (6.21 miles).