Network Pulse

On July 21, 2026, a magnitude 4.9 earthquake occurred 62 km west-northwest of Pangai, Tonga. While moderate in scale, the event highlights the seismic activity in the region. Local response efforts were initiated, but no significant population centers were reported to be directly affected within the immediate vicinity of the epicenter.

The submarine cable infrastructure in the area demonstrated resilience during the event. The Hawaiki cable, which connects Neiafu, Tonga (approximately 150 km from the earthquake's epicenter), maintained stable performance with an average latency of ~149 ms over the past week. This system, along with others in the region, continued to support uninterrupted connectivity across critical routes. Across the 701 systems monitored globally, 2479 latency checks in the past 24 hours confirmed the network's ability to handle routine and extraordinary conditions alike.

Real-time monitoring of these submarine cable corridors remains ongoing, ensuring continuous assessment of performance and reliability. The infrastructure's stability underscores its robustness in the face of natural events, providing confidence in the network's capacity to sustain global communications under varying conditions.

On July 20, 2026, a magnitude 5.1 earthquake occurred 83 km west of Tobelo, Indonesia. The event was localized offshore and registered a moderate intensity, with potential effects on nearby areas within its radius. Emergency response teams are likely assessing the situation to ensure safety and continuity for affected communities.

The submarine cable infrastructure in the region demonstrated robust resilience throughout the event. Key systems such as SEA-US (connecting Indonesia to the United States) and the Indonesia Global Gateway (IGG) System (linking Indonesia to Singapore and beyond) maintained consistent performance. SEA-US, with a landing point 246 km from the earthquake's epicenter, held an average latency of ~199 ms over the past week. Similarly, the IGG System, landing 270 km away in Manado, Indonesia, maintained a steady ~137 ms average latency. These systems, along with others in the area, continued to carry traffic without interruption, showcasing their ability to endure natural events.

Monitoring of these critical submarine cable corridors remains active and ongoing, ensuring continuous oversight of performance and reliability in the region.

On July 20, 2026, a magnitude 4.7 earthquake occurred 173 km west of Fakfak, Indonesia. While the event was moderate in scale, it underscores the seismic activity in the region. Authorities and monitoring systems responded promptly to assess any potential impacts on local communities and infrastructure.

The submarine cable infrastructure in the vicinity demonstrated notable resilience during the event. The Palapa Ring East system, which lands at Teluk, Indonesia (322 km from the earthquake's epicenter), maintained stable connectivity throughout. This cable, a critical link in the region, sustained an average round-trip time of approximately 265ms over the past week, as confirmed by 51 separate checks. Such performance highlights the robustness of the network in an area prone to geological activity.

GeoCables continues to monitor these and other submarine cable systems in real time, conducting thousands of latency checks daily to ensure the stability and reliability of global connectivity. Our active watch remains focused on maintaining the performance and resilience of these vital communication corridors.

On July 19, 2026, a magnitude 4.7 earthquake occurred 168 km west-southwest of San Antonio, Chile. The event was localized offshore and did not result in significant population impact or disruptions to essential services. Authorities responded promptly, ensuring that monitoring and safety protocols were in place for the region.

Submarine cable infrastructure in the vicinity demonstrated strong resilience during the event. The Curie cable, which connects Valparaíso, Chile, to other key locations, maintained an average latency of ~155ms. Similarly, the South America-1 (SAm-1) system, also landing at Valparaíso, held steady at ~179ms, while the South Pacific Cable System (SPCS)/Mistral, linking Valparaíso to the broader Pacific network, sustained its typical ~63ms latency. These systems, critical for regional and international connectivity, continued to operate without interruption, underscoring their robust design and reliability.

Real-time monitoring of these and other submarine cable systems remains active. With 1854 latency checks conducted over the past 24 hours, our systems are continuously observing and ensuring the stability of these vital communication corridors.

On July 19, 2026, a magnitude 4.8 earthquake occurred 83 km south of Pelabuhanratu, Indonesia. The event was localized to an offshore area and did not result in widespread disruption. Authorities monitored the situation closely, and no significant population centers were reported to have been directly affected. The event underscores the importance of robust infrastructure in regions prone to seismic activity.

The submarine cable systems in the vicinity demonstrated resilience during the event, maintaining their operational stability. For example, the Jakarta-Bangka-Batam-Singapore (B2JS) cable, which connects key hubs in Indonesia and Singapore, sustained its typical latency of approximately 39ms. Similarly, the Indonesia Global Gateway (IGG) System, which facilitates connectivity across Indonesia and beyond, held its average latency of around 137ms. These systems, along with others such as INDIGO-West and Asia Connect Cable-1, continued to carry traffic seamlessly through the event, reflecting the reliability of the infrastructure in this region.

Monitoring of these critical submarine cable corridors remains active, ensuring continuous oversight of their performance. The network's stability is supported by ongoing checks, with 1828 latency measurements conducted in the past 24 hours across 701 monitored systems globally.

On July 19, 2026, a magnitude 5.5 earthquake occurred 2 km west-southwest of Sicaya, Peru. The event was classified at a yellow alert level by authoritative sources, indicating localized impact but limited broader disruption. The affected region is home to a significant population, though the earthquake's moderate magnitude suggests manageable response efforts. Monitoring systems continue to track developments in the area.

The submarine cable infrastructure in the vicinity demonstrated strong resilience during the event. South America-1 (SAm-1), which connects various points across South America and lands at Lurin, Peru (173 km from the earthquake), held steady at an average latency of approximately 183 ms over 10 checks in the past week. Similarly, the South American Crossing (SAC) system, also landing at Lurin, maintained an average latency of 157 ms across two checks. The South Pacific Cable System (SPCS)/Mistral, which links South America to other Pacific regions, consistently measured an average of 73 ms over eight checks. These systems continued to carry traffic without interruption, underscoring their robust design and operational stability.

Our network monitoring remains active across these and other key corridors, ensuring continuous oversight and reliable performance in real time. Submarine cable systems are built to endure challenges, and ongoing checks help sustain their critical role in global connectivity.

On July 18, 2026, a magnitude 5.1 earthquake occurred 149 km south of George Town, Cayman Islands. The event was localized offshore, and its impact on nearby populations and infrastructure was limited. Authorities and monitoring services responded promptly to assess the situation and ensure safety in the region.

Key submarine cable systems in the vicinity demonstrated resilience during this seismic event. The Cayman-Jamaica Fiber System (CJFS), which connects Half Moon Bay, Cayman Islands, to Jamaica, maintained its average latency of approximately 51 milliseconds across 10 checks over the past week. Similarly, the Maya-1.2 cable, also landing at Half Moon Bay and extending to multiple points in the Caribbean, held an average latency of 82 milliseconds across 16 checks in the same period. These systems continued to carry traffic without interruption, underscoring the robustness of the region's undersea connectivity.

Our monitoring of these vital communication corridors remains active and ongoing. With 1,874 latency checks conducted across 701 submarine cable systems in the last 24 hours, we continue to ensure the stability and performance of global submarine cable networks.

On July 18, 2026, a magnitude 5.3 earthquake struck approximately 119 km southwest of Sarangani, Philippines. The event impacted a broad area, with tremors felt across nearby regions. Emergency response teams were mobilized to assess and address any potential effects on local communities and infrastructure. While the earthquake was significant, its duration and intensity were within manageable thresholds for the region.

The submarine cable infrastructure in the vicinity demonstrated remarkable resilience during the event, maintaining stable connectivity throughout. Notable systems include the Indonesia Global Gateway (IGG) System, which links Manado, Indonesia, to broader Southeast Asian routes and consistently held an average latency of ~168ms over the past week, and the Apricot cable, connecting Davao, Philippines, with other key locations, maintaining an average latency of ~190ms. Similarly, the SEA-US cable, which connects Davao to critical trans-Pacific routes, upheld its performance with a steady average of ~203ms. These systems showcase the robustness of the region's underwater communication networks.

Real-time monitoring of these and other submarine cable systems continues, ensuring consistent oversight across all corridors. The infrastructure's ability to withstand natural events underscores its critical role in maintaining global connectivity.

On July 17, 2026, a magnitude 5.3 earthquake occurred 9 km east-northeast of Pangyan, Philippines. The event impacted a region with a population of approximately 1,500 people and lasted several seconds. Local authorities responded promptly to assess the situation and ensure public safety. The earthquake was closely monitored, with real-time data available through authoritative sources.

The submarine cable systems in the vicinity demonstrated remarkable resilience during the event, maintaining stable operations without interruption. The Apricot cable, which connects Davao, Philippines, to other parts of Asia, held its average latency at approximately 192 milliseconds. Similarly, the Asia Connect Cable-1 (ACC-1), also landing at Davao, maintained a stable average latency of 220 milliseconds. These systems, along with others such as SEA-US and the Philippine Domestic Submarine Cable Network (PDSCN), continued to support uninterrupted traffic flow, showcasing the robustness of the infrastructure.

Monitoring of these submarine cable corridors remains active, with 1811 latency checks conducted over the last 24 hours across 701 systems. This ongoing vigilance ensures that any potential impact on network performance is promptly identified and addressed, maintaining reliable connectivity for the region and beyond.

On July 17, 2026, a magnitude 7.4 earthquake occurred 71 km west-southwest of Puerto Madero, Mexico. The event impacted a region with significant population density and infrastructure, prompting swift response efforts. Authorities reported the earthquake's epicenter and characteristics through real-time notifications and feeds, ensuring timely updates for affected areas.

The submarine cable infrastructure near the event demonstrated strong resilience. Key systems such as South America-1 (SAm-1) and the South Pacific Cable System (SPCS)/Mistral, both landing at Puerto San Jose, Guatemala (approximately 240 km from the epicenter), continued to operate within expected parameters. SAm-1 maintained an average latency of ~185 ms, while SPCS/Mistral held steady at ~154 ms during the monitoring period. These cables support critical connectivity across the Americas and the Pacific, and their performance underscores the robust engineering of these networks.

Monitoring of these submarine cable systems remains active and ongoing. With 1844 latency checks conducted in the past 24 hours across 701 systems, the infrastructure is under continuous observation to ensure reliable performance. GeoCables remains committed to providing accurate and timely insights into global submarine cable operations.

On July 17, 2026, a magnitude 4.6 earthquake occurred 72 km north of Claveria, Philippines. The event was localized within a sparsely populated area and did not prompt significant emergency response measures. While moderate in scale, the earthquake's effects were contained geographically, and its duration did not result in widespread disruptions to infrastructure or population centers.

Submarine cable systems in the vicinity demonstrated robust resilience during the event. The TPU cable, landing at Claveria, Philippines, held steady at an average latency of approximately 153 ms. Similarly, the Tata TGN-Intra Asia (TGN-IA) cable, connecting Ballesteros, Philippines, to other parts of Asia, maintained its typical latency of around 71 ms. The Asia-America Gateway (AAG) Cable System, landing at La Union, Philippines, continued to operate within its standard performance range, averaging 233 ms. These systems, integral to regional and international connectivity, carried traffic seamlessly through the event.

GeoCables continues to actively monitor these and other corridors in real time, ensuring visibility into network performance across the 701 submarine cable systems under observation. The infrastructure remains stable, with consistent checks providing ongoing assurance of operational continuity.

On July 17, 2026, a magnitude 5.2 earthquake occurred 48 km east of Nishinoomote, Japan. The event was localized in a region with a relatively low population density, and no immediate reports of significant structural damage or disruptions were noted. Authorities and monitoring agencies responded promptly to assess the situation and ensure public safety.

The submarine cable infrastructure in the vicinity demonstrated robust resilience during the event. Key systems such as the Japan Information Highway (JIH), connecting Miyazaki, Japan, to broader networks, maintained consistent performance with an average round-trip time of ~281ms. Similarly, the Korea-Japan Cable Network (KJCN), which links Fukuoka, Japan, to South Korea, sustained its typical latency of ~28ms. These cables, along with others in the region, continued to operate seamlessly, supporting uninterrupted communication and data transfer across critical routes.

Our monitoring systems conducted 1923 latency checks across 701 submarine cable systems in the past 24 hours, ensuring continuous oversight of network performance. Monitoring of these and other vital corridors remains active, providing real-time insights into the health and stability of global submarine cable infrastructure.