Network Pulse

On July 5, 2026, a M5.3 earthquake struck approximately 71 km south of Severo-Kuril’sk, Russia.

No submarine cables with landing points within 350km of this event are currently monitored by GeoCables. Our latency monitoring for the affected region did not detect any active alerts or significant anomalies on July 5, 2026. However, four latency issues were observed in the network that day, but their exact correlation to the earthquake is unknown and requires further investigation.

On July 4, 2026, a magnitude 5 earthquake occurred approximately 64 km west of Tobelo, Indonesia. Our monitoring currently shows no active alerts but has identified two latency anomalies on the network.

The submarine cables with landing points within 350km of the event are SEA-US (Kauditan, Indonesia), ACC-1 and Bifrost (both landing at Manado, Indonesia), and IGG System (also landing at Manado). Latency measurements indicate that SEA-US has an average latency of 209ms with 10 checks per week, while ACC-1 and Bifrost show averages of 223ms and 247ms respectively, both checked 97 and 10 times weekly. The IGG System displays a more stable performance with an average latency of 48ms, monitored twice weekly.

On July 3, 2026, a M4.8 earthquake occurred approximately 24 km southeast of Tambolaka, Indonesia. Our monitoring currently indicates no latency anomalies and one active alert on the network.

The Palapa Ring East submarine cable, which lands at Waingapu, Indonesia (approximately 92km from the epicenter), is within our monitored region. Our measurements show an average latency of about 255ms with 18 checks per week. As of now, there are no indications of any impact on this or other cables in the area.

On July 2, 2026, a M4.7 earthquake occurred approximately 49 km northwest of Yonakuni, Japan.

The affected submarine cables with landing points within 350km include the Apricot, Asia Pacific Gateway (APG), FLAG North Asia Loop/REACH North Asia Loop, and New Cross Pacific cable systems, all landing at Toucheng, Taiwan. Our latency measurements indicate that these cables are currently experiencing average latencies of around 164ms to 55ms with a check frequency of 7 to 9 times per week. No active alerts have been triggered as of the latest monitoring data.

On July 2, 2026, a M5.2 earthquake struck approximately 23 km southeast of Karpathos, Greece. Our monitoring currently indicates no active alerts but has detected three latency anomalies.

The following submarine cables have landing points within 350km of the epicenter: Thetis, SeaMeWe-5, Thetis Express, Apollo East and West, 2Africa, EMC West-1, and India Europe Xpress (IEX). Latency measurements for these cables are as follows: Thetis (average 138ms), SeaMeWe-5 (148ms), Thetis Express (133ms), Apollo East and West (133ms), 2Africa (254ms), EMC West-1 (124ms), and IEX (137ms). These measurements reflect the current network status without any reported damage or outages.

On July 2, 2026, a magnitude 4.5 earthquake occurred approximately 88 km southwest of Gorontalo, Indonesia.

• The affected area includes the Asia Connect Cable-1 (ACC-1) and Bifrost cables, which both land at Manado, Indonesia, located about 313 km from the epicenter. Our latency measurements indicate that ACC-1 has an average latency of ~222ms with 118 checks per week, while Bifrost shows an average latency of ~245ms with only 10 checks per week.

On July 1, 2026, a magnitude 6 earthquake occurred approximately 49 km east of Noda, Japan.

The submarine cable system affected is the Hokkaido-Sakhalin Cable System (HSCS), which has a landing point at Ishikari, Japan, located about 346 km from the epicenter. Our monitoring shows that this event resulted in latency anomalies on the HSCS, with an average measured latency increase of approximately 345 milliseconds over seven days. Currently, there are no active alerts on our network for this region.

On July 1, 2026, a magnitude 4.8 earthquake occurred approximately 10 km west-southwest of Hyūga, Japan.

The Korea-Japan Cable Network (KJCN), which lands at Kitakyushu, Japan, is within the affected region. Our monitoring shows that this cable experienced an average latency increase of about 37 milliseconds over seven days, with a total of 8 checks conducted. No active alerts were triggered by this event.

On June 30, 2026, a magnitude 6 earthquake struck approximately 75 km SSW of El Progreso, Mexico.

No submarine cables with landing points within 350km of the epicenter are currently monitored by GeoCables. Our latency monitoring for the affected region has identified two latency anomalies, but no active alerts have been triggered as a result of this event. The absence of direct connections in the area means that we do not expect any immediate impact on our network services.

A magnitude 4.6 earthquake occurred on June 30, 2026, approximately 221 km NNE of Bitung, Indonesia.

Our monitoring indicates that submarine cables in the vicinity have shown latency anomalies. Specifically, SEA-US (landing at Kauditan, Indonesia, 232km from the event), ACC-1 and Bifrost (both landing at Manado, Indonesia, 233km from the event), and IGG System (also landing at Manado) are within our monitored range. The latency for SEA-US is measured at an average of ~208ms with 10 checks per week, while ACC-1 and Bifrost show averages of ~221ms and ~233ms respectively, both with 121 checks per week. The IGG System shows a lower average latency of ~40ms with only 3 checks per week.