CNN) -- Tsunami warnings were issued for Fiji and New Zealand after a massive earthquake measuring about 7.8 in magnitude shook the southern Pacific Ocean.
The quake's epicenter was about 153 kilometers (95 miles) off the coast of Tonga, according to the U.S. Geological Survey.
It struck Thursday at 4:26 a.m in Tonga (Wednesday at 1526 GMT).
Two hours later, there was still no indication that a tsunami had been generated by the quake.