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

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

Did you feel it?

If you felt the quake, you can submit a report through the USGS Felt Report form. So far, the agency has collected 38 online responses from individuals reporting that they felt the tremor. Light shaking has been detected and residents reported feeling the earthquake in a number of cities, including Carlsbad, Imperial, Brawley and Calipatria 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 last week

Over the last week, there have been four quakes of magnitude 2.5 or greater centered nearby. The largest, measuring 3.7, occurred 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