A magnitude 6.9 earthquake struck Russia's Kamchatka Peninsula on Friday. No tsunami warning was issued, but Japan's meteorological agency mistakenly issued a magnitude 9.9 alert before canceling it.
A magnitude 6.9 earthquake struck Russia's Kamchatka Peninsula on Friday, according to the US Geological Survey (USGS). The European-Mediterranean Seismological Centre (EMSC) initially reported the quake as magnitude 7.0 but later updated it to 6.9. No tsunami warning was issued, and there were no immediate reports of casualties or damage.
Seismic agencies reported varying figures for the earthquake's parameters. The USGS stated the earthquake occurred at 3.35 p.m. local time (0335 GMT) near the Pacific Ocean coast, about 76 kilometers (47 miles) northeast of Ozernovskiy. The USGS reported the depth as 143.2 kilometers in one instance, while another report citing USGS data listed the depth as 135 kilometers. The EMSC reported the depth as 140 kilometers, with its epicenter located about 123 kilometers southwest of Vilyuchinsk. Russia's Unified Geophysical Service of the Russian Academy of Sciences placed the epicenter on land about 156 kilometers southwest of Petropavlovsk-Kamchatsky at a depth of 138 kilometers.
The Unified Geophysical Service noted that tremors were felt in parts of Petropavlovsk-Kamchatsky, Ust-Kamchatsky, Aleutsky, Vilyuchinsk and Yelizovsky. The USGS issued a Green alert for shaking-related fatalities and economic losses, indicating a low likelihood of casualties and damage.
Japan's Meteorological Agency (JMA) mistakenly issued an early warning estimating a magnitude 9.9 earthquake and forecasting strong shaking across much of the country. The alert was issued at approximately 12:36 p.m. Friday in Japan and was canceled at 12:48 p.m., according to NHK. The early-warning display identified the location as the Kuril Islands region and showed an estimated magnitude of 9.9 at a depth of 140 kilometers.
The JMA later apologized for the error. A JMA spokesman stated that the system "incorrectly calculated both the earthquake’s magnitude and location." The agency confirmed there was no cyberattack and that it was still investigating the cause. The actual shaking recorded in Japan was minimal, with the strongest intensity recorded in Hakodate, Hokkaido, at intensity 1 on Japan's 0–7 scale, which is barely perceptible.
The US National Tsunami Warning Center said there was no danger following the tremors. The Pacific Tsunami Warning Center (PTWC) reported at 03:43 UTC that there was no tsunami threat from this earthquake. The Global Times and Anadolu Ajansı reported no injuries or infrastructure damage.
The Kamchatka Peninsula is part of the Pacific Ring of Fire, a region known for frequent seismic and volcanic activity. Shafaq News reported that the Russian Emergency Situations Ministry announced earlier this month that seismologists recorded 62 earthquakes in Kamchatka within a week.
The incident highlights the challenges in real-time seismic monitoring and the potential for automated systems to generate false alarms. The erroneous magnitude 9.9 alert in Japan, a country highly sensitive to seismic events due to its location on the Ring of Fire, underscores the importance of accurate early-warning systems for public safety and trust in emergency protocols.
Sources
This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.
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