PAPA NEW GUINEA (CBS SF ) — The U.S. Geological Survey says a magnitude 7.7 earthquake has struck in Papua New Guinea. The earthquake prompted a tsunami warning.

The USGS says the quake’s epicenter was located 33 miles (54 kilometers) southeast of Kokopo, Papua New Guinea and was at a depth of 65 kilometers. The quake hit at 3:48 p.m. PST Sunday.

READ MORE: Berkeley Police Arrest Convicted Sex Offender For Allegedly Accosting Teens, Claiming To Be Police Officer

A tsunami alert was issued for coastal areas within 1,000 kilometers of the quake’s epicenter. There was no threat for the California coast.

COMPLETE QUAKE COVERAGE: CBS Earthquake Resource Center

READ MORE: San Ramon Police Arrest 2 Suspects in Repeat Home Depot Tool Thefts

This article will be updated as information warrants, and follow KPIX 5 on Twitter at @CBSSF or KCBS Radio on Twitter at @KCBSNews for updates on breaking news anytime.

DID YOU FEEL IT?: USGS Shake Map For Northern California
LIVE QUAKE MAP: Track Real-Time Hot Spots
BAY AREA FAULTS: Interactive Map Of Local Faults

MORE NEWS: Scott Peterson Resentenced To Life Without Parole; Laci's Mom: 'You Will Always Be Their Murderer'

Strong earthquakes with an epicenter off the coast can trigger tsunamis, depending on the size and type of the fault movement. The Pacific Tsunami Warning Center tracks earthquake data for the West Coast.
WEST COAST TSUNAMI TRACKING:

Tsunami Alerts & Maps