The Bureau of Meteorology advises a rapidly developing low pressure system to the northeast of the island is expected to move southwest and deepen closer to the NSW coast during Tuesday.

Strong to gale force winds and large and powerful waves are forecast to develop over the island.

Damaging east to northeasterly winds averaging 50 to 65 km/h and gusts reaching 90 km/h are possible at Lord Howe Island from around dawn on Tuesday until late evening.

Damaging surf conditions, with waves exceeding 5 metres in the surf zone, are likely to produce significant beach erosion from early Tuesday afternoon, particularly for east northeast facing coastlines.

The NSW State Emergency Services (SES) advise you:

• Trim trees and branches that could potentially fall on your home or property.
• Park your car under secure cover and away from trees, powerlines and drains.
• Secure or put away items, such as outdoor furniture, trampolines and roofing iron that could blow around in strong winds.
• Prepare an emergency kit in case you lose power or need to leave your home.

To stay up to date with the latest weather information, visit the Bureau of Meteorology's website.

For emergency help in floods and storms, call the Lord Howe Island Police on (02) 6563 2199.

Stay safe.