Network Pulse

On August 21, 2026, a magnitude 5.4 earthquake occurred 148 km SSE of Tateyama, Japan. The event was classified at a green alert level, indicating low impact on the affected region. While the earthquake was felt locally, its effects were limited, and no significant disruptions were reported in the surrounding area. Monitoring systems noted the event, and response mechanisms remained on standby as a precaution.

The submarine cable infrastructure in the region demonstrated strong resilience during the earthquake. Key systems such as the Japan-Guam-Australia North (JGA-N) cable, which connects Minamiboso, Japan to international destinations, maintained stable latency at an average of ~62ms. Similarly, the Apricot cable, landing at Minamiboso and linking Japan with other parts of Asia, held its baseline latency of ~180ms. The Izu Islands Cable System, serving Hachijo, Japan, also continued to operate within its typical ~231ms range. These systems successfully supported uninterrupted data traffic, underscoring the robustness of the network.

Real-time monitoring of these and other submarine cable corridors continues, with 2522 latency checks conducted in the past 24 hours. The infrastructure remains under active observation to ensure ongoing stability and performance.

On August 21, 2026, a magnitude 4.9 earthquake occurred 88 km north of Ruteng, Indonesia. The event affected a sparsely populated area and lasted briefly, with no reports of significant damage or disruption to local infrastructure. Emergency response teams monitored the region closely, ensuring preparedness and safety measures were in place for nearby communities.

Submarine cable systems in the vicinity demonstrated their resilience during the event. The Indonesia Tengah Cable Systems, landing at Labuhan Bajo (102 km from the epicenter), maintained stable performance with an average latency of ~180ms. Similarly, Palapa Ring East, connecting Waingapu (206 km from the epicenter), held steady at ~180ms. The Barat Timur Indonesia-2 (BTI-2) cable, landing at Jeneponto (257 km from the epicenter), also remained robust, with an average latency of ~177ms across its monitored corridor. These systems, vital for regional connectivity, continued to carry traffic seamlessly throughout the earthquake.

Real-time monitoring of these cable systems and their corridors remains active. With 2558 latency checks conducted in the last 24 hours across 705 submarine cable systems, the network continues to demonstrate stability and reliability under constant observation.

On August 21, 2026, a magnitude 4.7 earthquake occurred 6 km west of Onna, Japan. The event impacted areas within Okinawa Prefecture, with localized shaking reported. Emergency response teams were deployed promptly, and no widespread disruptions to critical infrastructure or services were reported in the affected region.

Submarine cable systems in the vicinity demonstrated robust resilience during the event. The Guam Okinawa Kyushu Incheon (GOKI) cable, which connects Naha, Japan, to other key locations in the region, maintained its average latency of approximately 101 ms across 13 checks over the past week. Similarly, the Japan Information Highway (JIH), also landing at Naha, continued to operate at an average latency of 236 ms across three checks during the same period. These systems carried traffic seamlessly, underscoring the reliability of the infrastructure in the face of seismic activity.

Real-time monitoring of these and other submarine cables remains active, ensuring continuous oversight of network performance. The stability of these corridors highlights the resilience of the infrastructure and the effectiveness of ongoing monitoring efforts.

On August 20, 2026, a magnitude 5.6 earthquake occurred 67 km north-northwest of Ende, Indonesia. The event was categorized at a green alert level, indicating low expected impact on the surrounding population and infrastructure. While the tremor was felt in the region, its effects were limited, and no significant disruptions were reported in the immediate aftermath.

Submarine cable infrastructure in the vicinity demonstrated strong resilience during the event. The Indonesia Tengah Cable Systems, landing at Labuhan Bajo (169 km from the epicenter), and Palapa Ring East, landing at Waingapu (197 km away), maintained their expected performance, with average latency holding steady at approximately 180 ms. Similarly, the Palapa Ring Middle, which connects to Baubau (336 km from the epicenter), continued to operate within its usual parameters. These systems, critical for connectivity across the region, successfully carried traffic without interruption.

Monitoring of these and other submarine cable systems remains active, with 2733 latency checks performed over the past 24 hours to ensure the continued stability of global communications. Real-time observation of this infrastructure supports its ongoing reliability and performance.

On August 20, 2026, a magnitude 5.3 earthquake occurred 48 km north-northeast of Ruteng, Indonesia. The event was centered in a region with a population density that could experience moderate effects, though its overall impact on infrastructure and communities remains under review. Authorities and monitoring systems responded promptly to assess the situation.

Submarine cable systems in the vicinity demonstrated resilience during the event. The Indonesia Tengah Cable Systems, with a landing point in Labuhan Bajo (92 km from the epicenter), maintained its typical latency of approximately 180 ms. Similarly, the Palapa Ring East system, connecting Waingapu (165 km from the epicenter), and the Barat Timur Indonesia-2 (BTI-2) system, landing at Jeneponto (305 km from the epicenter), continued to operate within their usual latency ranges of 180 ms and 181 ms, respectively. These systems, vital for regional and international connectivity, carried traffic seamlessly during the seismic activity.

Our monitoring infrastructure conducted 2,770 latency checks across 705 submarine cable systems over the past 24 hours, ensuring comprehensive oversight. Real-time monitoring of these and other submarine cable corridors remains active, providing continuous assessment of network performance and stability.

On August 20, 2026, a magnitude 5.7 earthquake occurred 32 km NNE of Ruteng, Indonesia. The event was categorized at a green alert level, indicating minimal expected impact to the surrounding population and infrastructure. While the earthquake was felt in the region, no significant disruptions were reported, and local systems remained operational.

Submarine cable systems in the vicinity demonstrated resilience during the event. The Indonesia Tengah Cable Systems, landing at Labuhan Bajo (82 km from the epicenter), and Palapa Ring East, landing at Waingapu (148 km away), maintained their average latencies of approximately 180 ms. Similarly, Barat Timur Indonesia-2 (BTI-2), which lands at Jeneponto (317 km from the event), held steady at an average of 181 ms. These cables, critical for connecting Indonesian islands and supporting regional communication, continued to carry traffic without interruption, underscoring the robustness of the infrastructure.

Monitoring of these cable systems and their corridors remains active in real time, with 2740 latency checks conducted across 705 submarine cable systems in the last 24 hours. This continuous oversight ensures that any potential impacts are promptly identified and addressed.

On August 20, 2026, a magnitude 5.8 earthquake occurred 25 km NNE of Ruteng, Indonesia. The event affected a region with a significant population and infrastructure, though detailed impact assessments are still ongoing. Local and regional response teams have been mobilized to address any immediate needs and assess potential damage in the area.

Despite the earthquake's proximity to key submarine cable infrastructure, systems in the region demonstrated strong resilience. The Indonesia Tengah Cable Systems, with a landing point at Labuhan Bajo (72 km from the epicenter), maintained an average latency of ~180ms. Similarly, the Palapa Ring East, landing at Waingapu (143 km from the epicenter), and Barat Timur Indonesia-2 (BTI-2), landing at Jeneponto (318 km away), also sustained their usual performance, with average latencies of ~180ms and ~181ms, respectively. These cables play a critical role in connecting Indonesia's islands and facilitating regional communication.

Our monitoring continues in real time across these and other submarine cable systems, ensuring that any changes in performance are promptly identified. The stability of these vital communication corridors highlights the robustness of the infrastructure in the face of natural events.

On August 19, 2026, a magnitude 5.5 earthquake occurred 52 km north-northeast of Ruteng, Indonesia. The event was recorded at a green alert level, indicating a lower likelihood of significant impact on populations or infrastructure. The region experienced localized seismic activity, with monitoring systems confirming the event's characteristics and location.

Despite the proximity of the earthquake to several key submarine cable systems, the infrastructure demonstrated strong resilience. The Indonesia Tengah Cable Systems, landing at Labuhan Bajo (93 km from the epicenter), maintained an average latency of approximately 180 ms. Similarly, the Palapa Ring East, connecting Waingapu (170 km away), and the Barat Timur Indonesia-2 (BTI-2), landing at Jeneponto (301 km away), upheld their typical latencies of ~180 ms and ~181 ms, respectively. These systems, critical for regional and inter-island connectivity, continued to operate within expected parameters, underscoring their robustness under natural stressors.

Our monitoring remains active across these and other submarine cable corridors, with 2717 latency checks conducted in the past 24 hours. This continuous oversight ensures that any potential changes in network performance are promptly identified and addressed.

On August 19, 2026, a magnitude 4.7 earthquake occurred 80 km north of Ruteng, Indonesia. The event was localized, with its impact area primarily centered in the vicinity of the Flores Sea. While the earthquake was moderate in scale, its proximity to regional infrastructure highlighted the importance of robust systems in maintaining connectivity during such natural events. Local response teams assessed the situation, and no major disruptions were reported in the affected area.

The submarine cable infrastructure in the region demonstrated strong resilience throughout the event. Systems such as the Indonesia Tengah Cable Systems (landing at Labuhan Bajo, Indonesia, 91 km from the epicenter) and Palapa Ring East (landing at Waingapu, Indonesia, 197 km away) maintained stable performance, with round-trip latency holding steady at approximately 180 ms. The Barat Timur Indonesia-2 (BTI-2) system, which connects to Jeneponto, Indonesia, 262 km from the earthquake, also carried traffic seamlessly. These cables are critical for linking Indonesia's islands and supporting regional connectivity, and their stability underscores the robustness of the network.

Monitoring of these submarine cable corridors continues in real time, ensuring any future events are promptly observed and assessed. This ongoing vigilance supports the reliability of global communications infrastructure.

On August 19, 2026, a magnitude 5.2 earthquake occurred 66 km north-northwest of Ende, Indonesia. The event impacted a region with a population of approximately 50,000 people, lasting several seconds and prompting local assessments and response efforts. While the earthquake was moderate in magnitude, its proximity to critical infrastructure warranted close attention.

Submarine cable systems in the area demonstrated resilience during the event. The Palapa Ring East cable, which lands at Waingapu, Indonesia (200 km from the earthquake's epicenter), maintained stable performance throughout, with an average round-trip latency of approximately 180 milliseconds. This cable, part of Indonesia's connectivity backbone, links regional hubs and facilitates essential communications. Across all monitored systems, 2748 latency checks conducted in the past 24 hours confirmed consistent traffic flow through these vital corridors.

Real-time monitoring of submarine cable systems continues to ensure the stability of global connectivity. These networks are designed to endure environmental challenges, and ongoing surveillance supports their reliability. GeoCables remains committed to providing detailed insights into the performance and resilience of the infrastructure we monitor.

On August 18, 2026, a magnitude 4.8 earthquake occurred 72 km northwest of Ende, Indonesia. The event was localized, with limited regional impact, and no widespread disruptions were reported. Authorities continue to monitor the area, ensuring timely responses to any potential aftershocks or related developments.

Submarine cable infrastructure in the region demonstrated strong resilience during the event. The Palapa Ring East system, which connects Waingapu, Indonesia (187 km from the earthquake's epicenter), maintained stable performance. Over the past seven days, this system has consistently delivered an average latency of approximately 180 milliseconds across monitored routes. This stability underscores the robust design and operational reliability of the cable systems in this corridor, ensuring uninterrupted connectivity for the region.

Real-time monitoring of these submarine cable systems remains active, with 2739 latency checks conducted across 705 systems in the past 24 hours. This continuous oversight ensures that any changes in network performance are promptly identified and addressed, supporting the ongoing reliability of global communications infrastructure.

On August 18, 2026, a magnitude 4.9 earthquake occurred 76 km northwest of Ende, Indonesia. The event impacted a region with a population density typical of Indonesia's smaller islands and lasted for a brief duration. Local response teams were mobilized promptly, and authoritative sources provided real-time updates to ensure effective coordination and situational awareness.

The submarine cable systems in the vicinity demonstrated remarkable resilience during the earthquake. The Barat Timur Indonesia-2 (BTI-2) cable, which connects Jeneponto, Indonesia, to other critical points in the region, maintained an average latency of approximately 181 milliseconds over the past week, as measured across 71 checks. Traffic continued uninterrupted, showcasing the robustness of the infrastructure in handling external geological events. Across the 705 systems monitored, 2746 latency checks in the last 24 hours confirmed consistent performance across the network.

Real-time monitoring remains active for all corridors, ensuring continuous oversight of submarine cable systems in the area. This ongoing vigilance supports the stability and reliability of global communications infrastructure, even in the presence of natural events such as this earthquake.