IMPERIAL COUNTY, CA — A 4.3 magnitude quake was detected near Calipatria Friday morning, according to the U.S. Geological Survey.

At 2:55 a.m., the region was rattled by a tremor. The earthquake hit at a depth of 7 miles, with its epicenter about 7 miles west-northwest of Calipatria.

Did you feel it?

If you noticed the quake, you can share your experience using the USGS Felt Report form. The agency has so far received 38 reports via its online form from people who indicate they experienced the tremor. According to the USGS DYFI report, light shaking was recorded and residents in cities including Carlsbad, Imperial, Brawley and Calipatria reported experiencing the earthquake.

Impact and estimated losses

Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage. Recent earthquakes in this area have caused secondary hazards such as landslides and liquefaction that might have contributed to losses.

Structure information summary
Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building types are unreinforced brick masonry and reinforced masonry construction.

Historical information
A magnitude 6.6 earthquake 315 km northwest of this event struck San Fernando, California on February 9, 1971 (UTC), with estimated population exposures of 319,000 at intensity VIII and 21,000 at intensity IX or greater, resulting in a reported 65 fatalities.

Quakes last week

In the past week, three quakes with a magnitude 2.5 or greater have been registered in the area. The strongest, a 3.7 magnitude quake, shook close to Borrego Springs prior to this quake.

The three largest earthquakes nearby in the last week:

• 3.7, west of Borrego Springs on July 10
• 3.0, west-northwest of Calipatria on July 11
• 2.5, northwest of Progreso, B.C. on July 4

Source: The U.S. Geological Survey