The NSW State Emergency Service (SES) is urging residents to prepare for damaging winds and potentially intense heavy rain fall as widespread thunderstorms are forecast to develop on Sunday and Monday.
Severe storms are likely to cover a large area of southern NSW, west of the great dividing range, the ACT and southern and eastern districts. It is possible the severe weather will also extend into Sydney during Sunday evening.
Residents are warned to prepare for widespread damaging wind gusts exceeding 90km/h and potentially destructive wind gusts over 125 km/h. The storms will also pose a risk of heavy to locally intense rainfall, leading to flash flooding and local river rises.
The storms are anticipated to move eastward during the evening, crossing the divide and reaching the coast.
NSW SES State Duty Commander, Assistant Commissioner Colin Malone said it was time for residents to prepare now.
"Ahead of the thunderstorm risk tomorrow, you should take time to prepare your homes," Assistant Commissioner Malone said.
"Loose items in your yard can be thrown around during strong winds and cause damage to property and injury to people.
"Put away anything you can and be sure to trim branches and trees away from your property.
"Never park your car under trees or powerlines, and if intense rainfall develops in your area avoid driving.
"Flash flooding is also a big concern with these storms - it can occur very quickly and without official warning.
"If you come across a flooded road please make a safe decision and turn around, find an alternative route it is just not worth the risk"
For the latest information and warnings visit ses.nsw.gov.au. For help during floods, storm and tsunami call the NSW SES on 132 500 or Triple 0 (000) for life threatening situations.
