SAPPORO, Japan, Feb. 17 (UPI) -- A strong earthquake hit Hokkaido, Japan's northernmost major island, early Saturday.
The quake measured 6.6 on the Richter scale, Mainichi Daily News reported. That can be strong enough to cause structural damage in a 100-mile-across area in populated places, but no injuries or major property damage were reported.
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The epicenter was about 30 miles offshore from Tokachi.
No tsunami warning was issued.
Hokkaido, a seismically active area with several volcanoes, has had two earthquakes of at least magnitude 8 since November, including one that caused a minor tsunami.
