The Samoa Meteorology Office has issued a heavy rainfall warning for all of Samoa as a low pressure system continues to bring rain, thunderstorms and gusty winds.

A weather advisory issued by the Meteorology Office at 5pm (local time) pointed to a trough of low pressure over Samoa, which is having an impact on the unpredictable weather conditions currently being felt in the islands.

“The trough of a low pressure system remains over Samoa. A massive cloud band associated with the system continues to affect the group with heavy rain, thunderstorms and gusty winds,” the advisory states.

“This system will maintain rainy and breezy weather conditions for tonight (Thursday) and tomorrow (Friday) as it slowly moves southward. Therefore, the heavy rain warning remains enforced as well as the flood advisory for all major rivers and vulnerable areas.”

The unpredictable changes in weather continues to catch many residents and motorists off-guard.

The Meteorology Office has warned that the heavy downpour will have an impact on vulnerable areas of Samoa.

"Heavy downpours with poor visibility, gusty winds, foggy and slippery roads over mountain passes and ranges, pooling near roadsides and waterways.”

A taxi-driver who works for the Togo A'asa Taxi Service, Afemata Tausaga, told Samoa Observer that he continues to be worried about the road condition and the safety of his passengers.

"Every time I head out to the Vaimauga and Anoama'a districts, there are lots of potholes and if this rain continues then there will be more potholes to see," he said.

The trough of low pressure hanging over Samoa is forecast to remain in place until the end of the week, according to the Meteorology Office. 

Members of the public, who are staying in areas that are most likely to be affected by flooding following heavy rain, have been urged by the authorities to stay alert and be prepared.

The next weather update will be issued by the Meteorology Office at 5am (local time) on Friday.