Trees have come down across roadways and on homes as winds lashed the Hawkesbury today (Tuesday).
North Richmond has been hit particularly hard by the wind that began late this morning, with a branch falling onto a the roof of a home at Keda Circuit and a large tree coming down at Tyne Crescent.
Live Traffic NSW was reporting a number of trees had fallen in the Wisemans Ferry Road area at South Maroota shortly before 1pm, with emergency services in attendance and motorists were advised to use caution.
Hawkesbury State Emergency Service (SES) Controller Kevin Jones told the Gazette calls for assistance started coming in in the early afternoon.
"There was a little narrow [weather] band that went across about 12.30pm," he said. "We are up to about 18 jobs now [3pm] all in the North Richmond, Richmond, South Windsor and Windsor Downs area.
"A lot of them are trees on roads.
"There are two houses that we might need to put a tarp on at Tyne Crescent, North Richmond, and Francis Street in Richmond."
Endeavour Energy was reporting more than 760 customers had been affected by power outages in Hobartville and Londonderry this afternoon, with crews dispatched to deal with problems.
More than 580 customers around Cattai, Colo Heights, Cumberland Reach and Lower Portland were also affected.
A trampoline was picked up by the wind and blew onto the roadway at Yarramundi Lane near Crowleys Lane in Agnes Banks, and traffic was also affected in both directions up Bells Line of Road at Mt Tomah, near Skyline Road, where a tree had also come down.
A detailed severe thunderstorm warning for damaging winds and large hailstones had been issued for parts of the Hawkesbury late this morning.
The Bureau of Meteorology predicted a gusty thunderstorm likely for this afternoon, possibly severe.
Winds were predicted northwesterly 20 to 30 km/h increasing to 30 to 40 km/h in the early afternoon then turning southwesterly 30 to 45 km/h in the evening.