India will not be affected by the powerful undersea quake that struck Japan today, a Tsunami warning centre in Hyderabad said on Friday.

"India will not have any effect," sources in the Indian National Centre for Ocean Information Services (INCOIS) said. A one metre-high tsunami hit northeast Japan on Saturday, after a powerful 7.3-magnitude undersea quake struck off the coast which was devastated in last year's quake-tsunami disaster.

The wave swept ashore at just after 6 pm in Ishinomaki, a city badly hit by the 2011 tsunami that wrecked a large swathe of the northeast coast, killing thousands.

INCOIS provides ocean information and advisory services to the industry, government and scientific community and society at large.