A magnitude 3.3 earthquake struck with a sharp thud early Sunday, but there were no immediate reports of damage or injuries.

According to the U.S. Geological Survey, the quake occurred at 1:34 a.m. and was centered in the Santa Ynez Mountains 7½ miles northeast of Carpinteria. The depth was placed at a little more than a half-mile below the earth’s surface.

The earthquake was felt as far west as Montecito and Santa Barbara’s Riviera and Upper Eastside neighborhoods.

The Pacific Tsunami Warning Center did not issue a warning or alert in the wake of the quake.

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— Noozhawk publisher Bill Macfadyen can be reached at wmacfadyen@noozhawk.com. Follow Noozhawk on Twitter: @noozhawk. Connect with Noozhawk on Facebook.