Incident report · 2026041701
Sirius South: 0.51× baseline latency
Resolved · 1h 29m
What we measured
| Cable | Sirius South |
| Segment | Blackpool, GB → Dublin, IE |
| Detected | 2026-04-17 01:01 UTC |
| Resolved | 2026-04-17 02:31 UTC |
| Duration | 1h 29m |
| Observed latency | 22.1 ms |
| Baseline | 43.7 ms · 0.51× |
| Increase | +118% |
| 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 2026041701: warning — ratio 2.18x
- Alert #79 improving: 1/3 consecutive OK
- Alert #79 resolved: RTT 22.06ms (baseline 43.67ms), 3 consecutive OK
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 2026041701: Sirius South. https://geocables.com/incident/2026041701
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