Tropical Cyclone Rene hit the territory's eastern Manu'a islands Friday before growing in strength, with winds reaching 86 mph and gusts to 103 mph by late evening.
Several Manu'a residents reached by phone by The Associated Press said the winds have been extremely strong but they have not heard of any reports of injury. Telephone links, however, have been intermittent.
"They're getting clobbered from the back side," said Meteorologist Mase Akapo Jr. with the National Weather Service in Pago Pago.
By 11 p.m., the storm was centered about 100 miles northeast of Pago Pago, on the territory's most populous island, Tutuila.
Emergency officials in the capital said there were reports that high winds had downed some trees and electrical lines. The officials also said there was one death indirectly caused by Rene
- a 50-year-old man died Friday morning after falling from a two-story building while boarding it up to protect it from the storm.
NWS forecaster Carol Baqui in Pago Pago said Rene swirled for a time around the Manu'a islands before it "finally settled north." She said the capital region should begin feeling some of the storm's force before dawn Saturday.
Baqui warned of possible damaging high seas along coastlines with waves reaching 18 feet.
Territorial Gov. Togiola Tulafono called for calm, urging residents to "be aware and be safe."
Referring to the tsunami that killed more than 200 people in the Samoan islands and Tonga in September, Gulafono said "as we recover from the events of last September 29th, it is a good feeling that we have placed high priority to help ourselves by preparing and spreading the emergency awareness message."
Rene may also threaten Samoa, the Tokelau Islands, Tonga and Fiji.
Diani Donu, forecaster at Fiji's Nadi Tropical Cyclone Center, said Rene is expected pass about 90 miles southeast of Apia, the capital of nearby Samoa, bringing strong gales and heavy seas.
The center said earlier that the cyclone might pass between the Tonga and Fiji, avoiding a direct hit.
Broadcasters in the two countries were urging people to seek shelter, stay indoors and avoid using boats.