Network Pulse

A magnitude 7.1 earthquake occurred on June 25, 2026, approximately 28 km northwest of Montalbán, Venezuela. This event is within a range that could potentially impact nearby submarine cables.

• The Venezuelan Festoon, South American Crossing (SAC), GlobeNet, ALBA-1, and the submarine cables landing in Curaçao are all within 350 km of the earthquake's epicenter. Our latency measurements show slight variations: the Venezuelan Festoon exhibited an average latency increase of ~194ms with 25 checks over seven days, while SAC, GlobeNet, ALBA-1, and those landing in Curaçao showed similar but slightly varying increases.

On June 24, 2026, a M5.59 earthquake occurred approximately 11 km north of Redwood Valley, California. Our monitoring currently indicates no active alerts on the network, but we have observed latency anomalies affecting two submarine cables within our coverage area.

• The Echo cable, which lands at Eureka, CA, United States (179km from the event), has shown an average latency of 221ms with 14 checks over seven days. There are no reported issues or damages to this cable as of now.

• The TPU cable also terminates in Eureka, CA, United States, at a distance of 179km from the event. It has an average latency of 225ms with 40 checks over seven days. No significant disruptions have been detected on this cable either.

A magnitude 4.9 earthquake occurred on June 24, 2026, approximately 28 km southeast of Fry, Greece. The event is located within a region that could potentially affect nearby submarine cables.

• Our monitoring indicates latency anomalies on the SeaMeWe-5 and 2Africa cables, both with landing points within 350km of the earthquake. Specifically, SeaMeWe-5 showed an average latency increase of about 138ms over seven days, while 2Africa experienced a similar increase to around 237ms. The India Europe Xpress (IEX) cable also has a landing point in the affected area but did not show any significant changes in its measured latency.

A magnitude 5 earthquake struck approximately 71 km WNW of Catuday, Philippines on June 24, 2026.

Our monitoring indicates that five submarine cables with landing points within 350km of the epicenter are being affected. The Asia-America Gateway (AAG), SEA-H2X, and Asia United Gateway East (AUG East) systems, which land at La Union, Philippines, have shown average latency increases of around 224ms, 170ms, and 201ms respectively over the past week. The Apricot and Pacific Light Cable Network (PLCN), both landing at Baler, Philippines, also experienced slight latency increases averaging 185ms and 184ms, while the EAC-C2C cable, which lands at Cavite, Philippines, showed a less pronounced increase of approximately 146ms. No active alerts are currently in place, but ongoing monitoring is essential to ensure network stability.

On June 23, 2026, a M5.3 earthquake occurred 126 km south of Isangel, Vanuatu. The event is located in the South Pacific region, close to submarine cable routes.

The Gondwana-1 cable, which lands at Noumea, New Caledonia (approximately 331 km from the epicenter), has shown latency anomalies with an average increase of about 28 milliseconds over seven days. Currently, there are no active alerts on our network for this region.

A magnitude 4.9 earthquake occurred on June 23, 2026, approximately 171 km WNW of Tobelo, Indonesia.

Our monitoring indicates that five submarine cables with landing points within a 350km radius of the event are being observed: Palapa Ring Middle, SEA-US, Asia Connect Cable-1 (ACC-1), Bifrost, and Indonesia Global Gateway (IGG) System. Latency measurements show average delays ranging from approximately 97 to 254 milliseconds for these cables, with varying frequency of checks per week. Currently, there are no active alerts on the network, but we continue to monitor closely.

On June 23, 2026, a M4.6 earthquake occurred approximately 10 km east of Miyakojima, Japan. Our monitoring currently indicates no active alerts on the network but has identified one latency anomaly.

The Asia Submarine-cable Express (ASE) and Cahaya Malaysia cables have landing points within 350km of the epicenter. Specifically, the ASE/Cahaya Malaysia cable lands at Komesu, Japan, which is about 272km from the earthquake's location. Our measurements show an average latency increase of approximately 103ms with seven checks over a week.

On June 22, 2026, a M4.9 earthquake occurred approximately 68 km WNW of Tobelo, Indonesia.

The affected submarine cables within 350km of the event include Palapa Ring Middle, SMPCS Packet-1, SEA-US, Asia Connect Cable-1 (ACC-1), Barat Timur Indonesia-1 (BTI-1), Barat Timur Indonesia-2 (BTI-2), Bifrost, and Indonesia Global Gateway (IGG) System. Our latency measurements show that while there are currently 1 latency anomaly and no active alerts on the network, average latencies have increased slightly for these cables. For instance, Palapa Ring Middle shows an average increase of ~256ms over its baseline with 7-day monitoring, and SEA-US has seen a rise to ~165ms from its normal levels.

On June 21, 2026, a M4.8 earthquake occurred approximately 86 km ENE of Fangale’ounga, Tonga.

The Hawaiki submarine cable, which lands at Neiafu, Tonga (111km from the event), is within our monitored region. Our latency measurements indicate an average latency increase of about 217ms over the past seven days with five checks per day. Currently, there are no active alerts on the network, and we continue to monitor the situation closely.

On June 21, 2026, a M4.7 earthquake occurred approximately 16 km east of Torata, Peru. Our monitoring currently shows no active alerts on the network but has identified one latency anomaly.

The affected submarine cables with landing points within 350km are South America-1 (SAm-1) and South Pacific Cable System (SPCS)/Mistral, both landing at Arica, Chile. SAm-1 shows an average measured latency of about 181ms with 47 checks over seven days, while SPCS/Mistral displays an average latency of approximately 123ms with 14 checks per week. These measurements indicate potential impact on network performance in the region but do not suggest any significant damage or outages.

A magnitude 4.7 earthquake occurred on June 21, 2026, approximately 80 km southwest of Padang, Indonesia.

Our monitoring does not indicate any submarine cables with landing points within 350 km of the epicenter. Currently, we have recorded 1 latency anomaly but no active alerts on our network in relation to this event. The absence of measured disruptions suggests that the earthquake did not significantly impact the submarine cable systems in the region.

A magnitude 5.2 earthquake occurred on June 20, 2026, approximately 10 km south of Kastrí, Greece. This event is within a radius of 350km from several submarine cables that we monitor.

Our latency measurements indicate potential impacts on the following cables: The 2Africa and India Europe Xpress (IEX) cables, both landing at Tympaki, Greece, are showing an average latency increase of about 254ms and 131ms respectively. Similarly, the Asia Africa Europe-1 (AAE-1), Blue, and MedNautilus Submarine System cables, which land in Chania, Greece, have experienced increases averaging around 224ms, 87ms, and 99ms respectively. These measurements suggest that while there are latency anomalies, no active alerts have been triggered as of the current monitoring period.