Nearly 150 people told Earthquakes Canada they recently felt a magnitude 3.4 earthquake near Prince George, BC.
Most people who reported feeling the effects of the quake described its intensity as “weak,” but 28 people described it as slightly higher, according to the Community Internet Intensity Report.
“There have been no reports of major damage or injuries, and none are expected.” Emergency Info BC said the quake struck just after 3 p.m. on September 21 with a magnitude of 3.4 and a depth of 5 kilometers be.
Earthquakes less than magnitude 3.5 are recorded by local seismographs but are not generally felt. In contrast, earthquakes measuring 3.5 to 5.4 magnitude are often felt but rarely cause damage, according to Earthquakes Canada.
“It is very unlikely that an earthquake less than magnitude five could cause damage,” Earthquakes Canada said on its website.
“Yes! Very strong abrupt shaking, felt like someone drove a truck into the house or shook it by the shoulders. I’m in Tabor Lake,” one person commented on twitter. Tabor Lake is about 20 minutes drive northwest of Prince George.
According to Earthquakes Canada, the quake struck 32 kilometers southwest of Prince George.
Natural Resources Canada seismologist Taimi Mulder said: “Earthquakes are not common in this area, but they are not unheard of. It’s not unreasonable to have an earthquake of that magnitude, but they are rare – probably once a decade.”
“The building codes are now designed to prevent buildings from collapsing and this is right near the area where you could see the damage. In general, there isn’t too much concern for residents of Prince George,” she said.
dr Fei Tong, an assistant professor of seismics at UNBC, echoed a similar remark: “Engineers carefully design these structures so that this damage will not result in the complete collapse of the building,” Prince George told local media. The city now has a very low earthquake risk .
In March 1986, the region’s strongest earthquake was recorded with a magnitude of 5.4. Prior to that, Earth Quakes Canada reported the greatest damage recorded in the region in 1932 at a magnitude of 5.0.
Two other earthquakes in the region occurred in September with a higher magnitude. One was a magnitude 4.1 quake 112 km south of Port Alice, BC that occurred on September 20 at a depth of 10 km; and the other was a magnitude 3.6 quake 130 miles west of Port Hardy, BC, at a depth of 6 miles on September 7.