What magnitude was the California earthquake near Susanville?

The earthquake near Susanville, California, was initially measured at a 5.3 magnitude but was later revised to 4.9.

Did the ShakeAlert system work for the California earthquake?

Yes, the USGS issued a ShakeAlert shortly after the 4.9 magnitude quake, notifying residents in California, Nevada, and Oregon.

Are there risks of aftershocks after the California earthquake?

Yes, the USGS has detected several aftershocks and predicts a 60% chance of a 3.0 magnitude or higher aftershock in the next week.

Home / Disasters and Accidents / West Coast Jolted: Shallow Quake Triggers ShakeAlert

West Coast Jolted: Shallow Quake Triggers ShakeAlert

1 Jan

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Summary

A 4.9 magnitude earthquake struck near Susanville, California.
ShakeAlert messages were sent to phones across California, Nevada, and Oregon.
No damage or injuries were reported following the tremor.

West Coast Jolted: Shallow Quake Triggers ShakeAlert

A 4.9 magnitude earthquake briefly rattled residents across California, western Nevada, and southern Oregon on Tuesday evening. The tremor, which struck at 9:49 p.m. PT near Susanville, California, prompted widespread ShakeAlert notifications on mobile devices, urging people to 'drop, cover, and hold on.'

The earthquake occurred at a shallow depth of 5.6 miles, intensifying the surface shaking experienced by many. While the initial magnitude was reported as 5.3, it was later revised to 4.9 by the USGS. Despite the tremors being felt across a wide area, including cities like Reno and Sacramento, no damage or injuries have been reported.

Since the main quake, the USGS has detected at least six aftershocks. The agency forecasts a 60 percent chance of a 3.0 magnitude or higher aftershock in the coming week. This seismic activity occurs within the seismically active Basin and Range region, a known area for moderate earthquakes.