The Imperial Valley was rocking and rolling Monday evening.

A swarm of earthquakes started shortly after 6:00 p.m. with the strongest measuring a magnitude 4.0 reported at 6:14 p.m. followed immediately by a magnitude 3.7 shaker. The epicenter was right under the city of El Centro. There were no immediate reports of injuries or damage but residents reported rattled nerves. The aftershocks measured between 1.5 and 2.6 magnitude.