TROPICAL Cyclone Evan is expected to arrive in Fiji waters by Sunday as a Category Three severe tropical cyclone.
A Category Three cyclone will result in a 10-minute wind speed between 118 and 157 kilometres per hour.
The maximum three second gust for a Category Three cyclone is between 170 and 224 kilometres per hour, causing very destructive winds.
At 2pm yesterday, Tropical Cyclone Evan Category Two centre was located about 40 kilometres southeast of Apia, Samoa, or 910 kilometres east-northeast of Lakeba, Fiji.
Fiji Meteorological Service director Alipate Waqaicelua said at its projected track and intensity trend, Tropical Cyclone Evan should move across the northern parts of Tonga tomorrow and arrive into Fiji waters by Sunday.
"If this happens, damaging heavy easterly waves/swells will precede the cyclone," he said.
Mr Waqaicelua said at this time, sustained winds over Fiji were anticipated to be around or above 64 knots. "Associated momentary guts will be a lot higher," he said.
He said all communities needed to prepare now, heed warnings, and act responsibly to avoid unnecessary loss of lives and/or property.