Network Pulse

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.

On July 16, 2026, Mayon Volcano in the Philippines erupted, emitting ash clouds and producing occasional pyroclastic density currents, incandescent rockfalls, and gas plumes. The eruption, classified with a Volcanic Explosivity Index (VEI) of 4, affected an estimated 5.3 million people within a 100km radius and 1.39 million within 30km. Daily sulfur dioxide emissions ranged from 2,026 to 2,184 tonnes, and seismic activity included numerous rockfalls and volcanic tremors. The aviation alert level remains at Orange, and the event is not expected to require external humanitarian assistance due to the coping capacity of the exposed population.

Submarine cable infrastructure in the region demonstrated resilience during this event. The PLDT Domestic Fiber Optic Network (DFON), landing at Legazpi City just 15km from the volcano, maintained a steady average latency of ~256ms. Similarly, the Philippine Domestic Submarine Cable Network (PDSCN), with a landing point in Bulan 68km away, held its ~254ms average latency. These systems, along with others such as the Asia Submarine-cable Express (ASE), which connects Daet to broader regional networks, carried uninterrupted traffic through the eruption. Monitoring efforts over the past 24 hours included 2050 latency checks across 701 submarine cable systems, ensuring robust oversight.

Real-time monitoring of these corridors continues, ensuring the stability and reliability of critical communication infrastructure in the region. The submarine cable systems remain actively watched as they support uninterrupted connectivity during and beyond the event.

On July 16, 2026, a magnitude 4.7 earthquake occurred 1 km west-northwest of Sōsa, Japan. The event was relatively localized, with its epicenter situated near the eastern coastline of Japan. Despite its proximity to several key infrastructure points, the earthquake's impact appears to have been limited, and regional response systems were able to manage the situation effectively.

The submarine cable systems in the vicinity demonstrated robust resilience throughout the event. For example, the Japan Information Highway (JIH), which lands at Ibaraki (73 km from the epicenter), maintained its average round-trip latency of approximately 281 ms. Similarly, the EAC-C2C system, landing at Ajigaura (74 km away), held steady at around 80 ms, while the Asia Pacific Gateway (APG), landing at Maruyama (94 km away), consistently measured an average of 115 ms. These systems, which connect critical regions across Asia and the Pacific, continued to carry traffic seamlessly during and after the seismic activity.

Monitoring of these and other submarine cable systems remains active in real time, ensuring continuous oversight of network performance and stability across the region. This ongoing vigilance helps to maintain reliable connectivity even in the face of natural events.

On July 15, 2026, a magnitude 4.6 earthquake occurred 47 km east-northeast of Noda, Japan. The event was localized to a relatively small area, with no widespread disruptions reported. Local authorities responded promptly to assess the situation and ensure public safety in the affected region.

The submarine cable infrastructure in the area demonstrated strong resilience during and after the event. Key systems such as the Japan Information Highway (JIH), which connects Akita, Japan, to broader networks, maintained their average latency of approximately 281 milliseconds. Similarly, the E2A cable, landing at Tomakomai, Japan, continued to operate at its usual 78 ms average, while the Hokkaido-Sakhalin Cable System (HSCS), landing at Ishikari, Japan, upheld its typical latency of 373 ms. These systems, which are critical for regional and international connectivity, successfully carried traffic without interruption.

Real-time monitoring of these and other submarine cable systems remains ongoing, ensuring continuous oversight of network performance across the 701 systems under observation. This active monitoring helps maintain confidence in the stability and reliability of global communications infrastructure.

On July 15, 2026, a magnitude 5.1 earthquake occurred 52 kilometers north-northwest of Valparaíso, Chile. The event, centered near a coastal region, was monitored for its potential impact on local infrastructure and populations. Authorities responded promptly, ensuring safety measures were in place for affected areas. Earthquakes of this magnitude can pose risks to critical systems, especially in regions with significant submarine cable activity.

The submarine cable systems landing near Valparaíso demonstrated resilience during the event. Key systems such as the Curie cable (connecting the Americas, with a landing in Valparaíso) and the South Pacific Cable System (SPCS)/Mistral (linking South America and Oceania) maintained their typical performance, with average round-trip latencies of approximately 166ms and 150ms, respectively. The South America-1 (SAm-1) cable, which also connects Valparaíso to broader international networks, held steady at an average of 183ms. These cables, critical to global connectivity, continued to carry traffic seamlessly, underscoring the robustness of the region's undersea infrastructure.

Our monitoring systems remain actively engaged, performing continuous checks across these and other submarine cable systems worldwide. This real-time oversight ensures ongoing reliability and performance across key communication corridors.

On July 14, 2026, a magnitude 6.2 earthquake struck 34 km west-southwest of Sarangani, Philippines. The event occurred in a region with a significant population and infrastructure presence, prompting local response efforts. While the earthquake's effects on land were closely monitored, its proximity to key submarine cable landing points highlighted the importance of robust undersea communication systems in the area.

The submarine cable systems near the event demonstrated remarkable resilience, maintaining stable performance throughout. The Palapa Ring Middle, connecting Indonesia to the region, held an average latency of ~260ms over the past week. Similarly, the Apricot system, landing at Davao, Philippines, maintained its baseline of ~141ms, while the SEA-US cable, also landing at Davao, operated consistently at ~195ms. These systems are vital for regional and international connectivity, and their stability underscores the reliability of the infrastructure even during seismic events.

Monitoring of these and other submarine cable systems continues in real time, ensuring that any potential disruptions are promptly identified and addressed. The network's ability to sustain performance during such events reflects the strength of the infrastructure and the ongoing vigilance of monitoring efforts.