Network Pulse

On August 4, 2026, a magnitude 5.7 earthquake occurred 127 km northwest of Ternate, Indonesia. The event, classified with a green alert level, indicates a relatively low likelihood of widespread impact. While the earthquake was felt in the region, its effects on infrastructure and populations were limited, and no significant disruptions have been reported.

The submarine cable systems in the vicinity demonstrated robust performance throughout the event. Notably, the SEA-US cable, which connects Southeast Asia to the United States and lands at Kauditan, Indonesia (158 km from the epicenter), maintained its typical latency of approximately 214 ms. Similarly, the Asia Connect Cable-1 (ACC-1) and Bifrost systems, both landing at Manado, Indonesia (183 km from the epicenter), upheld their usual latencies of around 200 ms and 221 ms, respectively. The Indonesia Global Gateway (IGG) System, also landing at Manado, continued to operate at its baseline latency of approximately 49 ms. These systems ensured uninterrupted connectivity across critical routes.

Real-time monitoring of these and other submarine cable corridors remains active. Our continuous oversight helps ensure the resilience and reliability of global communications infrastructure, even in the face of seismic events.

On August 4, 2026, a magnitude 4.6 earthquake occurred 79 kilometers east of Onagawa Chō, Japan. While moderate in scale, events of this magnitude can be felt across a wide area and warrant close monitoring due to their potential to impact nearby infrastructure. Local authorities and monitoring systems responded promptly to assess any effects on the region and its critical systems.

The submarine cable systems in the vicinity demonstrated remarkable resilience during and after the event. The APCN-2 cable, which connects multiple locations across Asia and lands at Kitaibaraki, Japan (219 km from the epicenter), maintained an average latency of approximately 187 milliseconds over the past week. Similarly, the Topaz cable, landing at Takahagi, Japan (228 km from the event), upheld its average latency of around 160 milliseconds. These figures reflect the robust design and operational reliability of these systems, ensuring uninterrupted connectivity across key international routes.

Our monitoring continues to provide real-time oversight of these and other submarine cable systems, with 2722 latency checks conducted in the past 24 hours alone. This active vigilance ensures that any changes in performance are promptly identified and assessed, supporting the stability of global communications infrastructure.

On August 4, 2026, a magnitude 4.6 earthquake occurred 112 km west-southwest of Puerto Madero, Mexico. The event was localized offshore and did not significantly impact nearby populations or infrastructure. Authorities and seismic monitoring systems responded promptly, ensuring accurate data collection and regional situational awareness.

The submarine cable systems in the vicinity demonstrated strong resilience during and after the seismic event. South America-1 (SAm-1), which connects parts of South and Central America and lands at Puerto San Jose, Guatemala (279 km from the epicenter), maintained its measured latency at an average of ~143 ms over the past week. Similarly, the South Pacific Cable System (SPCS)/Mistral, also landing at Puerto San Jose, continued to operate within its typical latency range of ~98 ms. These systems carried traffic seamlessly, underscoring the robust design and reliability of the infrastructure in this region.

Real-time monitoring of these and other submarine cable corridors remains active, with 2601 latency checks conducted over the past 24 hours. The network's stability highlights the effectiveness of ongoing surveillance and the resilience of the global submarine cable ecosystem.

On August 3, 2026, a magnitude 4.8 earthquake occurred 152 km south of Hydaburg, Alaska. The event affected a sparsely populated area, with no immediate reports of significant damage or disruption. Authorities responded promptly, ensuring public safety and monitoring for any potential aftershocks. The earthquake's impact zone extended across a remote coastal region, emphasizing the importance of robust infrastructure in such areas.

Submarine cable systems near the event demonstrated strong resilience, maintaining stable connectivity throughout. The KetchCan1 Submarine Fiber Cable System, which links Prince Rupert, British Columbia, Canada, to Ketchikan, Alaska, held its average latency at approximately 45 ms during the period. Similarly, the Alaska United West (AU-West) cable system, connecting Ketchikan to broader networks, maintained its baseline latency of approximately 213 ms. These systems, situated within 350 km of the earthquake's epicenter, continued to support reliable communication without interruption, showcasing the robustness of the network.

Monitoring of these submarine cable corridors remains active in real time, with 2664 latency checks conducted across 705 cable systems in the last 24 hours. GeoCables continues to ensure that critical infrastructure is closely observed, providing confidence in the network's ability to withstand natural events.

On August 3, 2026, a magnitude 5.0 earthquake occurred 36 km north-northeast of Suez, Egypt. The event was localized and brief, with no significant population impact reported in the surrounding area. Authorities responded promptly, ensuring public safety and monitoring for any potential aftershocks in the region.

The submarine cable infrastructure in the vicinity demonstrated strong resilience during and after the seismic activity. Key systems such as FALCON and FEA, which both land at Suez, Egypt, maintained their operational integrity, with average latencies holding steady at approximately 148ms and 161ms, respectively. Additionally, the 2Africa cable, landing at Port Said, Egypt, 112 km from the event, continued to perform reliably with an average latency of 377ms. These systems, which connect critical regions across Europe, Africa, and Asia, successfully carried traffic without interruption.

Monitoring of these and other submarine cable systems remains active and ongoing, with 2577 latency checks conducted across 705 systems in the last 24 hours alone. This continuous oversight ensures that any potential impacts to these vital communication corridors are promptly identified and addressed.

On August 2, 2026, a magnitude 4.7 earthquake occurred 170 km southeast of Sarangani, Philippines. The event was notable for its proximity to regional infrastructure and communities, though it did not result in widespread disruption. Authorities continue to monitor the situation closely, ensuring safety and preparedness in the affected areas.

The submarine cable systems in the region demonstrated strong resilience during the event. Key systems such as the Apricot cable, connecting Davao, Philippines, to broader regional networks, maintained an average latency of approximately 169ms. Similarly, the Asia Connect Cable-1 (ACC-1) and the Bifrost system, both landing at Davao, held steady at ~199ms and ~210ms, respectively. These systems, critical for connectivity across Southeast Asia, carried traffic without interruption, underscoring the robustness of the infrastructure.

Real-time monitoring of these and other regional submarine cable systems continues, with 2618 latency checks conducted over the past 24 hours. This ongoing vigilance ensures that any potential impacts to connectivity will be swiftly identified and addressed, maintaining the stability of global communications.

On August 2, 2026, a magnitude 4.6 earthquake occurred 14 km southeast of Honmachi, Japan. The event was localized and moderate in scale, with seismic activity concentrated near the epicenter. Authorities responded promptly, and the region's infrastructure demonstrated its ability to manage such natural events effectively.

The submarine cable systems in the area, including the Okinawa Cellular Cable (landing at Hioki, Japan, 89 km from the epicenter) and the Korea-Japan Cable Network (landing at Fukuoka, Japan, 135 km from the epicenter), continued to perform reliably throughout the event. These systems, which connect key regions in Japan and neighboring countries, maintained their usual latency values, with the Okinawa Cellular Cable averaging ~290 ms and the Korea-Japan Cable Network averaging ~40 ms over the past week. This resilience highlights the robustness of the infrastructure in the region.

Our monitoring systems, which conducted 2,614 latency checks across 705 submarine cable systems in the last 24 hours, remain actively vigilant. Real-time data collection ensures continuous oversight of these vital communication corridors, supporting global connectivity even in the face of natural events.

On August 2, 2026, a magnitude 4.5 earthquake occurred 7 km south-southwest of Yumare, Venezuela. The event was localized within a sparsely populated area, with minimal reported impact on surrounding communities. Emergency services in the region responded promptly, and no significant disruptions to essential infrastructure were reported.

Submarine cable systems in the vicinity, including the Alonso de Ojeda, Amerigo Vespucci, and ARCOS cables, demonstrated resilience during the seismic event. These systems, which connect key locations such as Willemstad, Curaçao, and other regional hubs, maintained their operational integrity. For example, the Alonso de Ojeda cable consistently held its average latency of 86 milliseconds during the monitoring period, while the ARCOS cable maintained a stable 70 milliseconds. These figures underscore the robustness of the regional subsea infrastructure in handling external geophysical stresses.

Monitoring of these and other submarine cable systems continues in real time, with 2661 latency checks conducted across 705 systems in the past 24 hours. This active surveillance ensures ongoing assessment of network performance and reliability across critical communication corridors.

On August 2, 2026, a magnitude 4.8 earthquake occurred 64 km ENE of Noda, Japan. The event affected a localized area and population, with seismic activity monitored closely by regional and international agencies. While the earthquake's impact was moderate in scale, response systems and infrastructure in the vicinity were prepared to handle such occurrences effectively.

Submarine cable systems in the region demonstrated strong resilience during the event. The Hokkaido-Sakhalin Cable System (HSCS), which connects Ishikari, Japan, to Sakhalin, Russia, maintained stable performance throughout, with latency measurements averaging ~81ms over the past week (9 checks). These cables, critical for regional and international connectivity, continued to carry traffic seamlessly, underscoring their robust design and operational reliability.

Real-time monitoring of submarine cable corridors remains active, ensuring consistent oversight of network performance. With 2629 latency checks conducted in the last 24 hours across 705 systems, the infrastructure continues to support uninterrupted connectivity while remaining under vigilant observation.

On August 1, 2026, a magnitude 5.2 earthquake occurred 48 kilometers east-southeast of Tsunō, Japan. The event was of moderate intensity, and while its impact on surrounding areas is being assessed, it highlights the importance of robust infrastructure in seismically active regions. Authorities and monitoring systems responded promptly to evaluate any potential effects on local communities and critical systems.

Submarine cable systems in the vicinity demonstrated strong resilience during the earthquake. The Okinawa Cellular Cable, which lands at Hioki, Japan (156 kilometers from the event), maintained an average round-trip time of approximately 290 milliseconds over the past week. Similarly, the Guam Okinawa Kyushu Incheon (GOKI) system, connecting Kitakyushu, Japan (223 kilometers from the epicenter), sustained its typical latency of around 76 milliseconds. The Korea-Japan Cable Network (KJCN), also landing at Kitakyushu, continued to perform at its usual average of 38 milliseconds. These systems, critical for regional and international connectivity, successfully carried traffic without disruption.

Real-time monitoring of these and other submarine cable systems remains ongoing, ensuring that any changes in performance are promptly identified and addressed. The network continues to operate with stability and reliability, supported by continuous observation and analysis.

On August 1, 2026, a magnitude 4.9 earthquake occurred 3 km west of Matsubase, Japan. The event was localized, with a moderate impact on the surrounding area. Emergency services responded promptly, ensuring safety measures were in place for the affected population. The duration and intensity of the earthquake were closely monitored by regional authorities, emphasizing preparedness and resilience in the region.

Submarine cable infrastructure in the vicinity demonstrated robust performance during the seismic activity. The Korea-Japan Cable Network (KJCN), connecting Fukuoka, Japan, to South Korea, maintained an average latency of 38 milliseconds. Similarly, the Okinawa Cellular Cable, with landings at Hioki, Japan, held steady at 290 milliseconds. The Guam Okinawa Kyushu Incheon (GOKI) system, linking Kitakyushu, Japan, to broader regional hubs, sustained its average latency of 74 milliseconds. These systems continued to carry traffic seamlessly, underscoring their resilience and reliability under environmental stress.

GeoCables continues to monitor these and other corridors in real time, ensuring comprehensive oversight of submarine cable networks. The infrastructure remains stable, supported by ongoing latency checks and robust engineering designed to withstand regional challenges.

On August 1, 2026, a magnitude 5.5 earthquake occurred 57 km east of Mutsu, Japan. The event was classified at a green alert level by authoritative sources, indicating minimal potential for significant impact. The affected area is sparsely populated, and no major disruptions or emergency responses were reported. Monitoring systems continue to track the region for any developments.

The submarine cable infrastructure in the vicinity demonstrated resilience during the event. The Hokkaido-Sakhalin Cable System (HSCS), which connects Ishikari, Japan, to Sakhalin, Russia, is located approximately 208 km from the epicenter. This system maintained its usual latency of approximately 77 milliseconds, as measured over the last seven days. Traffic through these corridors remained stable, highlighting the robustness of the infrastructure in the region.

Real-time monitoring of submarine cable systems continues, with 2688 latency checks conducted across 705 systems in the past 24 hours. The network remains stable, and GeoCables continues to ensure comprehensive oversight of these critical communication pathways.