IMPERIAL COUNTY, CA — According to the U.S. Geological Survey, a 4.3 magnitude quake struck near Calipatria Friday morning.

A tremor rattled the area at 2:55 a.m. The earthquake’s epicenter was situated about 7 miles west-northwest of Calipatria and occurred at a depth of 7 miles.

Did you feel it?

If you noticed the quake, you can share your observations using the USGS Felt Report form. The agency has received 38 responses on its online form so far, from people indicating they experienced the tremor. Light shaking has been registered and residents reported experiencing the earthquake in several 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 past week

Four earthquakes of magnitude 2.5 or higher have been detected in the region over the last week. The most significant was a 3.7 magnitude earthquake recorded close to Borrego Springs prior to this quake.

The four largest earthquakes nearby in the last week:

• 3.7, west of Borrego Springs on July 10
• 3.3, west-northwest of Calipatria on July 11
• 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