GO HOME NOW: Authorities tell commuters to leave work early as Sydney's weather is about to get worse

Brook Mitchell/Getty Images Red sky in morning, sailor’s warning – dawn in Sydney today revealed the thunderstorms building and ready to drench the city.

Authorities are urging commuters who braved Wednesday’s deluge to head to work to leave early on Wednesday night.

Transport for NSW coordinator general Marg Prendergast said people should allow extra time to make it to their destination and “if possible, leave work early to avoid the peak”.

A repeat wave of the storm is expected to move across the city this evening, as it moves in a spiral off the coast, causing further chaos after more than 120mm of rain fell on Sydney’s CBD earlier today.

The vast majority of trains are operating, despite delays, and occasional flash flooding. Lewisham station, which closed earlier today, has reopened. Buses are being used on the T1 north shore line between Gordon and Hornsby while overhead wires are being repaired.

The light rail between Central and Dulwich Hill has also reopened after being closed earlier today.

Delays at Sydney Airport are also continuing after the weather forced multiple cancellations and reduced operating to just one runway this morning.

Ferries are also operational, although there have been some delays and cancellations. Parramatta River ferries are not working between Parramatta and Sydney Olympic Park and have been replaced by buses.

The bus network is suffering delays and diversions from debris on the roads, but flooding has subsided for now, and roads closed earlier in the day have been reopened, although NSW Police are requesting that people avoid driving unless it is essential. Traffic is heavy, but many drivers appear to have heeded that advice and traffic is slow but in lower volumes.

However, one person has died and nine people have been injured in crashes on Sydney roads today.

Blue Gum Road in Annangrove is closed in both directions at the creek, along with McClymonts Road in Maralya and Oxford Falls Road off the Wakehurst Parkway.

The wild weather has seen blackouts in thousands of homes, with traffic lights also down in multiple locations.

The SES is also braced for more call outs from tree damage with the rains softening the soil and wind gusts of up to 90km/h occurring as part of the storm. The SES has already responded to more than 1000 calls for help.

They also assisted in more than a dozen flood rescues this morning – the vast majority of them motorists trapped in vehicles are venturing into flood waters.

NOW WATCH: Briefing videos

Business Insider Emails & Alerts

Site highlights each day to your inbox.

Follow Business Insider Australia on Facebook, Twitter, LinkedIn, and Instagram.