Thread by @netblocks

Thread on internet connectivity in #Wuhan, #China:

Network data from the last ten days show a gradual fall beginning 17 January 2020.

The decline is consistent with population exodus as residents either flee the city closing up shop due to #coronavirus or for #LunarNewYear 📉

Diurnal internet connectivity falls similar to #Wuhan were observed in the US last year corresponding to mandatory hurricane evacuations.

These can be distinguished from power outages and flooding, with #HurricaneDorian the most recent reported 🌪
netblocks.org/reports/hurric…

Meanwhile the China Education and Research Network #CERNET that connects research facilities and universities has adopted an apparent internet curfew cycle in #Wuhan.

Connectivity falls between 12 am and 6 am daily from 22 January onward for unknown reasons and with no reports📉

Like clockwork, the China Education and Research Network #CERNET has been shut down in #Wuhan for the 3rd consecutive night with curfew applied at 00:00 am local time following 18 hour restoration 📉; reason still unknown.

⏰Curfew times: 00:00 a.m. - 6:00 a.m.

Good morning #Wuhan: Real-time network data show China education and research network #CERNET is back online in the city as of 6 am local time.

Timings are in line with a curfew-like outage cycle introduced 22 January. The nightly cuts are novel and remain unexplained ⏱📈