Incident report · 2026070901
West Africa Cable System (WACS): 1.15× baseline latency
Resolved · 8h 0m
What we measured
| Cable | West Africa Cable System (WACS) |
| Segment | Yzerfontein, ZA → Seixal, PT |
| Detected | 2026-07-09 21:01 UTC |
| Resolved | 2026-07-10 05:02 UTC |
| Duration | 8h 0m |
| Observed latency | 188.2 ms |
| Baseline | 164.1 ms · 1.15× |
| Increase | +192% |
| Severity | warning |
Who is affected
Countries where West Africa Cable System (WACS) comes ashore, how much of their submarine diversity this cable represents, and what our measurements into them show.
| Country | Dependence on this cable | Other submarine cables | What the measurements show |
|---|---|---|---|
| Angola resilience index: 80 · resilient |
1 of 5 cables (20% of submarine diversity) | 2Africa, SAT-3/WASC, South Atlantic Cable System (SACS) +1 more | no measurement today; median 294 ms over 30 days (5 routes) |
| Cameroon resilience index: 58 · moderate |
1 of 5 cables (20% of submarine diversity) | Ceiba-2, Nigeria Cameroon Submarine Cable System (NCSCS), SAT-3/WASC +1 more | no measurement today; median 171 ms over 30 days (2 routes) |
| Cape Verde resilience index: 84 · resilient |
1 of 6 cables (17% of submarine diversity) | Cabo Verde Telecom Domestic Submarine Cable Phase 1, Cabo Verde Telecom Domestic Submarine Cable Phase 2, Cabo Verde Telecom Domestic Submarine Cable Phase 3 +2 more | average 111 ms over the last day vs 141 ms over 30 days - faster |
| Côte d’Ivoire resilience index: 49 · vulnerable |
1 of 6 cables (17% of submarine diversity) | 2Africa, Africa Coast to Europe (ACE), MainOne +2 more | no measurement today; median 166 ms over 30 days (9 routes) |
| Congo - Kinshasa resilience index: 78 · resilient |
1 of 5 cables (20% of submarine diversity) | 2Africa, Lake Albert 1, Lake Albert 2 +1 more | average 199 ms over the last day vs 256 ms over 30 days - faster |
| Ghana resilience index: 49 · vulnerable |
1 of 6 cables (17% of submarine diversity) | 2Africa, Africa Coast to Europe (ACE), Glo-1 +2 more | median 166 ms today vs 169 ms over 30 days (6 routes) - unchanged |
| Namibia resilience index: 33 · land links |
1 of 2 cables (50% of submarine diversity) | Equiano | |
| Nigeria resilience index: 67 · moderate |
1 of 8 cables (13% of submarine diversity) | 2Africa, Africa Coast to Europe (ACE), Equiano +4 more | median 212 ms today vs 210 ms over 30 days (15 routes) - unchanged |
| Portugal resilience index: 100 · resilient |
1 of 21 cables (5% of submarine diversity) | 2Africa, Africa Coast to Europe (ACE), Azores Fiber Optic System (AFOS) +17 more | median 93 ms today vs 96 ms over 30 days (6 routes) - unchanged |
| Congo - Brazzaville resilience index: 33 · land links |
1 of 2 cables (50% of submarine diversity) | 2Africa | average 151 ms over 30 days |
| South Africa resilience index: 100 · resilient |
1 of 13 cables (8% of submarine diversity) | 2Africa, Africa Coast to Europe (ACE), Djibouti Africa Regional Express 1 (DARE 1) +9 more | median 226 ms today vs 210 ms over 30 days (22 routes) - unchanged |
| Spain resilience index: 100 · resilient |
1 of 38 cables (3% of submarine diversity) | 2Africa, Africa Coast to Europe (ACE), Almería-Melilla (ALME) +34 more | median 82 ms today vs 113 ms over 30 days (27 routes) - faster |
| Togo resilience index: 37 · vulnerable |
1 of 3 cables (33% of submarine diversity) | Equiano, Maroc Telecom West Africa | average 13 ms over the last day vs 47 ms over 30 days - faster |
Dependence is structural (share of the country's submarine cables), not a traffic share: real traffic distribution across cables is not public.
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 2026070901: warning - ratio 2.85x
- Alert #147 improving: 1/3 consecutive OK
- Alert #147 improving: 2/3 consecutive OK
- Alert #147 improving: 2/3 consecutive OK
- Alert #147 resolved: RTT 188.24ms (baseline 164.09ms), 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 2026070901: West Africa Cable System (WACS). https://geocables.com/incident/2026070901
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