The Disaster Management office in Samoa says roads have been flooded and in some cases washed away as Tropical Cyclone Amos hits Samoa.
The heavy rains and strong winds have also brought down trees and powerlines across the islands.
It says the Land Transport Authority are currently working on establishing a temporary access road for Lano in Savai'i.
There's also been flooding around the main urban areas in the capital, Apia.
Amos had been expected to intensify to a category four storm, but was downgraded overnight to a category two storm.
The Samoa Meteorological Service says that is now a category one warning for the east of Upolu.
Heavy rain, strong wind, and flood advisories had been issued for the entire country.
At 4am today (local time), tropical Cyclone Amos was located about 95 kilometres east of Faleolo, or 72 kilometres east of Apia, or 46 kilometres Northeast of Aleipata.
Residents in Samoa spent Saturday stocking up on supplies and securing loose items, with authorities warning people to be on alert and prepare for possible flooding, landslides and wind damage.
Virgin Australia has cancelled all flights to and from Samoa because of the cyclone.
Air New Zealand says it does not have any scheduled flights to Samoa until this afternoon but is keeping a close watch on the situation.