Police issued a media release just after 10.30 this evening, advising motorists that a number of streets in Cranebrook, Castlereagh, Kingswood, Jamisontown and Werrington had been affected by flooding.

The Great Western Highway near O'Connell Street was also affected, they said.

Police and the NSW State Emergency Service advise residents not to enter floodwaters or cross flooded roads.

At last check, Roads and Maritime Services (formerly RTA) advised the Great Western Highway at High Street was closed, the closure of Cranebrook Road between The Northern Road and Castlereagh Road and flooding on The Northern Road at Seventh Avenue, Llandilo.

They've also recorded a landslip and flooding on Springwood Road at Hawkesbury Heights.

Help: NSW SES on 132 500 or dial 000 in a life-threatening emergency

Flood and weather warnings: bom.gov.au/nsw

Road closures: rta.nsw.gov.au

Video: http://media.smh.com.au/news/envi ronment-news/flash-flooding-swamp s-sydneys-west-2994659.html?from= newsbox

Facebook comments:

Lee kadir: pretty much all of londonderry, and castlereagh road

gen Jagt: Floating cars on York & Jamo rd. Dont try to get to crane brook. Mulgoa flooded. Traffic lights out all over

Fiona Kane: Castleagh Road Penrith to Richmond - under very deep water in many many sections, parts of the road are like a river

Joshua Vincent: Llandilo is pretty much all closed off too

Sharon Timbos: I live at Cranebrook and we were flooded lucky did get into house but bucketing water away from front door. just had hot shower to keep warm

Sue Hampton: Our street is flooded too. First time in about 20 years.

Michele Becroft: Wow dunheved runs off my street must be pretty bad

Kathy Rae: "Police have blocked off Dunheved Rd, flooding on Victoria St,Burton St, Lethbridge Ave and Werrington Rds.Flooding is subsiding on streets in Cambridge Park "