Incident report · 2026041403
Mariana-Guam Cable: 4.3× baseline latency
Resolved · 1d 16h
What we measured
| Cable | Mariana-Guam Cable |
| Segment | Saipan, MP → Tanguisson Point, GU |
| Detected | 2026-04-14 05:01 UTC |
| Resolved | 2026-04-15 21:12 UTC |
| Duration | 1d 16h |
| Observed latency | 109.9 ms |
| Baseline | 25.6 ms · 4.3× |
| Increase | +331% |
| Severity | warning |
Path analysis
Traffic kept the same route. Latency rose without a visible path change, which points at congestion or a fault on the existing route rather than a reroute.
Cross-probe verdict. Only one probe saw it. We treat this as a probable false positive and label it as such.
Timeline
- Alert 2026041403: critical — ratio 4.31x
- Alert #74 manually resolved by admin
Detection method
Latency is sampled continuously from our probe network. An alert opens when round-trip time to a monitored endpoint holds above its rolling baseline, and closes automatically once it returns. Full method is described on the methodology page.
How to cite
GeoCables (2026). Incident 2026041403: Mariana-Guam Cable. https://geocables.com/incident/2026041403
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