NORTHERN Phrae province was shaken by its ninth small earthquake in three days this afternoon (Oct. 21) with this measuring 3.4 on the Richter scale and at a depth of four kilometres, TV Channel 7 said.
The Department of Disaster Prevention and Mitigation said the latest quake occurred at 2:59 p.m. at Huai O subdistrict in Long district of this province.
However initially there were no reports of tremors being felt,
The department explained that these small quakes were occurring because of a shift of the Thoen Fault group that lies in the Northeast – Southwest direction with this shift being in a horizontal leftward direction.
During Oct.19-21 nine earthquakes of 1.5-3.7 magnitude have occurred.
Chiang Mai too was rocked by a 4.1 magnitude earthquake with a very shallow depth of two kilometres at 4.36 a.m. yesterday morning and residents said they had never experienced this strong a quake that even shook houses before.
Top: An earthquake graph. Image: CTV News
Front Page: Map showing location of Phrae province. Image: TV Channel 7