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Aftershocks Follow 4.9 Quake Near Indio With No Major Damage Reported

Officials say alert timing depends on distance from the epicenter.

Seismic activity charted.
FILE - In this July 7, 2019 file photo, a visitor takes a photo of a crack in the ground following recent earthquakes near Ridgecrest, Calif. Scientists say the earthquakes that hammered the Southern California desert near the town of Ridgecrest last summer involved ruptures on a web of interconnected faults and increased strain on a major nearby fault that has begun to slowly move. (AP Photo/Marcio Jose Sanchez, File)
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Overview

  • The earthquake struck at 5:56–5:57 p.m. PT Monday about 12 miles northeast of Indio at a shallow depth of roughly 1.8–1.9 miles near the San Andreas Fault.
  • Seismic networks logged a continuing swarm, including a magnitude 3.8 aftershock late Tuesday morning, as monitoring and field checks remained underway.
  • Emergency officials reported no confirmed injuries or significant structural damage in Coachella Valley communities such as Palm Springs and Indio.
  • California’s ShakeAlert/MyShake system delivered warnings to many phones, with little or no lead time close to the epicenter and more seconds of notice farther away, according to Cal OES.
  • USGS revised the initial estimates from 5.1 to 4.6 before finalizing magnitude 4.9 and said more aftershocks are likely, with seismologists noting only a small chance of a larger event.