It's going to be a dangerously windy day in NSW

Phtoo; SAEED KHAN/AFP/Getty Image

It’s going to be an extremely windy day in Sydney and across southern NSW today.

The Bureau of Meteorology has issued a severe weather warning for damaging westerly winds, with gusts above 90km/h and averaging 60-70km/h.

Wind gusts of 90 km/h were recorded at Cabramurra, Nowra and Nerriga on Thursday afternoon and evening.

The strong winds are expected to continue on Friday in Sydney metropolitan area, Blue Mountains, Illawarra, South Coast and southern ranges throughout, with blizzards expected in the Alps above 1400 metres.

Winds gusts up to 83km/h were recorded on Sydney Harbour on Wednesday morning, when the strong winds blew down two brick walls in separate parts of the city, killing one man and seriously injuring another.

The Bureau says the winds are expected to ease for most areas by Saturday, but will persist along the coastal fringe until Saturday night.

The gusts will calm over the weekend to tops of 40km/h on Saturday, then 25km/h on Sunday with a sunnier outlook.

The State Emergency Services recommends that to keep safe, move vehicles under cover or away from trees, secure or put away loose items around your house, yard and balcony, and keep at least 8 metres away from fallen power lines or electric fences.

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