52 km NE of Misawa, Japan

Yes. A magnitude 4.7 (Light) earthquake was recorded near 52 km NE of Misawa, Japan on March 18, 2026 at a depth of 64.4 km (shallow (< 70 km)).

The earthquake had a magnitude of 4.7, classified as "Light" on the magnitude scale. It released energy equivalent to approximately 169.2 tons of TNT.

The earthquake occurred at a depth of 64.4 km, which is considered shallow (< 70 km). Shallow earthquakes typically cause stronger shaking near the epicenter.

The tsunami risk for this earthquake was assessed as none. Tsunami generation typically requires a magnitude 7.0+ shallow earthquake beneath or near the ocean floor.

Japan has a seismic risk level of "Very High". This earthquake occurred within Japan's territory and is part of the country's ongoing seismic activity record.

地震深度（也称震源深度）是从地表到地震破裂开始处的垂直距离。浅源地震（0-70公里）往往造成更多地表损害，中源地震（70-300公里）在更广的区域内被感知，深源地震（300-700公里）很少在地表造成重大破坏。

修正麦加利烈度（MMI）标度衡量地震在特定地点的影响，范围从I级（无感）到XII级（完全摧毁）。与衡量震源释放能量的震级不同，MMI描述的是在特定地点感受到的震动强度和发生的损害程度。

有感半径是人们能够感知地面震动的距离震中的最大距离。它主要取决于震级、深度和当地地质条件。浅源M6.0地震可能在300-500公里外被感知，而深源M6.0地震可能在更广但强度较低的区域被感知。

地震能量通常用TNT当量来表示，以便直观比较。M5.0地震释放的能量相当于约32,000吨TNT（一枚小型核武器），而M9.0地震释放320亿吨TNT当量——大约是史上最大核武器爆炸的1,000倍。

海啸的产生需要三个条件：地震必须是大型的（通常M7.0以上）、浅源的（深度100公里以内），并且发生在海底或其附近，伴有显著的垂直位移。走滑断层很少引发海啸，因为它们是水平运动而非垂直运动。