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Magnitude 6.1 quake hits off Tokyo, but no tsunami alert issued

Magnitude 6.1 quake off Tokyo triggers alert despite no tsunami warning.

What happened: A magnitude 6.1 earthquake struck offshore in the sea near Japan's Kanto region, the Japan Meteorological Agency said. Key numbers: Magnitude 6.1; quake hit at 7:39 pm; no tsunami alert issued. Why it matters: The agency reported the quake was shallow and did not issue a tsunami alert.
A magnitude 6.1 earthquake struck offshore in the sea near Japan's Kanto region, the Japan Meteorological Agency said.
The agency reported the quake was shallow and did not issue a tsunami alert.
Sources