Source:
cnnModerate earthquakes struck in Mexico, Alaska and Japan on Thursday, the U.S. Geological Survey said.
The first earthquake with a preliminary magnitude of 5.8 struck in southwestern Mexico, in the state of Guerrero, according to the USGS. The Mexican Seismological Service put the magnitude at 5.5. Many people exited the buildings they were in, but there were no immediate reports of damage.
Then a 5.8 magnitude earthquake was recorded on the Alaska Peninsula 14 miles south of Sand Point, Alaska and 573 miles southwest of Anchorage.
It was followed by a 6.1 earthquake that hit below the sea floor off the coast of the Japanese island of Honshu Thursday, the U.S. Geological Survey said. The depth of the quake is 15 miles, the USGS said and the epicenter is located 172 miles from Sendai, near the same zone as the aftershocks that followed the March 11 quake. The Japan Meteorological Agency has so far not released any tsunami warning.
Read more:
http://news.blogs.cnn.com/2011/05/05/moderate-earthquakes-strike-mexico-alaska-japan/
Since this was written, Alaska has had a second quake at 5.9
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_big.php