On Facebook,Sydney Trains said crews were now taking advantage of the break in the weather to begin repairs.
On the T1 North Shore line,buses are replacing trains between Hornsby and Berowra in both directions.
Meanwhile,trains are not running between Schofield and Richmond on the T5 line and no direct trains are running between Leppington and Richmond due to flooding on the tracks.
On the T7 line,buses are replacing trains between Lidcombe and Olympic Park due to flooding.
On Wednesday,the rail network descended into chaos as winds of up to 110km/h were recorded across Sydney.
In some cases,train information boards simply went black due to the pressure of multiple cancellations on the network.
NSW Transport Minister David Elliott told 2GB on Wednesday train crews needed time to clear and repair any damage to the network. He warned of “extreme” delays and widespread cancellations.
Mr Elliott later said in a statement that,if people did need to use the network,“please plan ahead and leave plenty of extra travel time”,adding that some information on transport apps and station information screens might not be up to date.