Commuters have faced a soggy journey home on Tuesday afternoon, with streets flooded and train services cancelled after thunderstorms and heavy rain passed over Sydney.

Flash flooding inundated major roads in Strathfield, Bexley and the Blue Mountains and residential streets across the city after the Bureau of Meteorology issued a severe thunderstorm warning for a wide area of central and eastern NSW, extending to the Sydney Metropolitan region. (See chart below.)

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Peter Zmijewski, a senior bureau forecaster, said the storms were likely to continue for the next couple of hours: "There are quite a few cells."