IMPERIAL COUNTY, CA — Friday morning, a 4.3 magnitude quake was registered close to Calipatria, according to the U.S. Geological Survey.

It was reported that a tremor shook the area at 2:55 a.m. The epicenter was positioned approximately 7 miles west-northwest of Calipatria, at a depth of 7 miles.

Did you feel it?

Those who noticed the earthquake are encouraged to report it via the USGS Felt Report form. The agency has so far received 43 reports via its online form from people who say they felt the quake. Light shaking has been recorded and people reported experiencing the tremor in a number of cities, including Whittier, Carlsbad, Imperial and Brawley based on the USGS DYFI report.

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 past week

Over the last week, there have been four quakes with a magnitude 2.5 or higher centered nearby. The largest one was a 3.7 magnitude earthquake that was reported near Borrego Springs prior to this quake.

The four largest earthquakes nearby in the last week:

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

Source: The U.S. Geological Survey