A 6.0-magnitude earthquake was reported in Japan on Saturday (May 31), according to the United States Geological Survey.

The earthquake was centered near Kushiro at a depth of 21.0 kilometers (about 13 miles). The USGS said it received one report of a person having felt the earthquake at the time of publication.

The Japan earthquake was reported two days after a 4.0-magnitude earthquake was reported in California on Thursday (May 29), according to the United States Geological Survey. The earthquake was centered near Petrolia at a depth of 2.6 kilometers (about 1.6 miles).

The California earthquake was reported days after a 6.0-magnitude earthquake was reported in Tonga on Sunday (May 25), according to the United States Geological Survey. The earthquake was centered near 'Ohonua at a depth of 11.6 kilometers (about 7.2 miles).

The Tonga earthquake was reported two days after a 5.2-magnitude earthquake was reported in Alaska on Friday (May 23), according to the United States Geological Survey. The earthquake was centered near Akutan at a depth of 10 kilometers (about 6.2 miles).

The Alaska earthquake was reported hours after a 6.2-magnitude earthquake was reported in Greece on Thursday (May 22), according to the United States Geological Survey. The earthquake was centered near Eloúnda at a depth of 64 kilometers (about 40 miles).

The Greece earthquake was reported days after a 4.2-magnitude earthquake was reported in Hawaii on Tuesday (May 20), according to the United States Geological Survey. The earthquake was centered along Pāhala at a depth of 32.4 kilometers (about 20 miles).

The Hawaii earthquake was reported hours after a 6.4-magnitude earthquake was reported in Papua New Guinea on Tuesday (May 20), according to the United States Geological Survey. The earthquake was centered along Angoram at a depth of 10 kilometers (about 22 miles).