Massive Earthquake measuring 7.7 felt in America's Alaska and Russia's Eastern shore; tsunami alert issued

A powerful earthquake measuring 7.7 on Richter scale shook United States'Alaska and Russia's eastern shore on Tuesday morning. 
The earthquake has triggered Tsunami warnings for Russia. 

The epicentre of the quake was at 199km ESE of Nikol'skoye, Russia.  More details awaited.

"An earthquake with magnitude 7.7 occurred 199km ESE of Nikol'skoye, Russia at 23:34:14.02 UTC on Jul 17, 2017," Google alert for seismic activities say. 

Several buoys are in #tsunami mode (blinking) following a magnitude-7.8 #earthquake off the coast of eastern Russia. pic.twitter.com/4UoSFsXLiR

— Brian Lada (@wxlada) July 18, 2017