Overview

• The earthquake struck at 06:23 JST on June 22 about 89 km east-southeast of Nemuro Peninsula with reported depths of 10–20 km and magnitudes ranging from 5.7 to 6.1.
• Two aftershocks measuring 5.3 and 4.1 occurred within 30 minutes of the initial quake, according to JMA data.
• Officials confirmed there was no tsunami threat and have received no reports of significant damage or injuries.
• The USGS issued a Green alert, indicating a low likelihood of casualties or economic losses, and estimated 267,000 people felt light shaking.
• This event is the latest in a series of quakes in Hokkaido this year, underscoring Japan’s earthquake-resistant infrastructure and preparedness measures.