Earthquake Of Magnitude 7 Strikes Russia, Japan Mistakenly Issues 9.9 Warning

What happened: A magnitude 7 earthquake struck Russia. Japan mistakenly issued a 9.9 warning. Key numbers: Magnitude 7 earthquake; Japan issued a 9.9 warning. Why it matters: The Kamchatka Peninsula sits on the Ring of Fire, a tectonic belt around most of the Pacific Ocean and a hotspot for seismic activity.

Magnitude 7 Russia earthquake triggered Japan's erroneous 9.9 warning, signaling seismic risk.

Magnitude 7 Russia earthquake triggered Japan's erroneous 9.9 warning, signaling seismic risk. — impact context not separately stored; see What changed.