At one point the only road public road into the shorefront community was cut off by rising floodwater under the railway bridge at Shore Road after waves whipped up by strong winds crashed over the seawall.
And water from the high tidal surge also flooded along parts of the Esplanade, stopping just short of the many local homes which overlook the Lough but causing damage to up to four parked cars.
Earlier sandbags had been delivered to those among the some 150 properties in the area which were deemed to be most a risk from the flooding threat, but the worst fears were not realised.
However, in the wake of their lucky escape, local householders and members of the business community have been voicing their concerns about the strength of the sea defences in the area.
And one of those Kinnegar residents, local Alliance Party councillor, Larry Thompson, also addressed their concerns at Tuesday night's meeting of the local authority in Bangor.
As a result members of the council's environmental services committee backed his call for improvements to be made to the sea defences along the shorefront at Kinnegar.
They agreed to his proposal that council officers should consult with the Department of Regional Development's Roads Service in a bid to improve protection for the area from Belfast Lough.
Mr Thompson said, "Last Friday and the Monday before, high Spring tides, together with severe wind, breached the sea wall defences causing flooding to the Esplanade and under the rail bridge.
"The construction of the stone faced sea wall, supporting the raised coastal path at the Esplanade and immediately opposite houses, allows water to seep through at Spring tides, and means of preventing this must be considered.
"Flooding under the rail bridge prevents car access into and out of Kinnegar and some means of draining or pumping it out must be considered."
Meanwhile Mr Thompson also paid tribute to the emergency services and council staff who had come to the aid of the Kinnegar residents in their hour of need.
He said, "Our thanks go to the police for being on standby and the council officers for helping to provide the valuable supply of sandbags, even though Kinnegar not been deemed at high risk on the weather charts."