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

It was reported that a tremor hit the region at 2:55 a.m. The epicenter was located roughly 7 miles west-northwest of Calipatria, at a depth of 7 miles.

Did you feel it?

If you felt the earthquake, you can submit a report via the USGS Felt Report form. The agency has received 30 responses on its online form so far, from people indicating they experienced the quake. The USGS DYFI report indicates that people in cities such as Imperial, Brawley and Calipatria felt light shaking during the tremor.

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.

Earthquakes past week

Four quakes with a magnitude 2.5 or above were recorded in the area last week. The most significant was a 3.7 magnitude earthquake registered 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
• 3.3, 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