The quakes struck along Myanmar's borders with Thailand and Laos, about 70 miles from Chiang Rai in Thailand. The northern Thai city sustained a little damage. The United States Geological Survey said tremors were felt in Bangkok and as far away as the Vietnam capital of Hanoi where people were evacuated from tall buildings.
The first one was very shallow, at a depth of 6.2 miles, while the second one was deeper at 142.5 miles. The epicenter was 69 miles from Chiang Rai, Thailand. It struck at 8:25 pm local time.
In the immediate aftermath of the 9.0 earthquake that has devastated Japan and put that country in danger of nuclear plant fallout, some geologists discussed what is called the "four corners theory" of earth movement.
It described the "four corners" theory about the Pacific Plate and how it relates to California. Japan sits "at the junction of a web of tectonic-plate boundaries that make it more peculiarly vulnerable to ground-shaking episodes than almost anywhere else. Three sides of the square have been hit in the last year, leaving one still to come.
The three sides that erupted commencing with 2010's 8.8 quake in Chile, the temblor in New Zealand almost exactly a year later in February 2011 and now the 9.0 devastating event in Japan. That leads experts to point to the last corner of the plate, which is the San Andreas Fault that runs through the southern California desert.
Newsweek reported that when one side of a tectonic plate shifts, "the Earth becomes like a great brass bell, which when struck by an enormous hammer blow on one side sets to vibrating and ringing from all over."
Thailand experienced its own devastation in December 2004 when a tsunami followed the quake which engulfed Pukhet. More details to follow as news is updated.
Image source of Thailand Earthquake Map: USGS