| Category 1 tropical cyclone (Aus scale) | |
|---|---|
| tropical cyclone (SSHWS) | |
 Satellite image of the unnamed tropical cyclone near its peak intensity | |
| Formed | December 26, 1984 |
| Dissipated | December 28, 1984 |
| Highest winds | 10-minute sustained: 85 km/h (50 mph) 1-minute sustained: 85 km/h (50 mph) |
| Lowest pressure | 987 hPa (mbar); 29.15 inHg |
| Fatalities | 26 |
| Damage | $110 million (1984 USD) |
| Areas affected | Tuvalu, Wallis and Futuna |
| Part of the 1984–85 South Pacific cyclone season | |
Meteorological History edit
Map key
Tropical depression (≤38 mph, ≤62 km/h)
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Storm type
Extratropical cyclone, remnant low, tropical disturbance, or monsoon depressionDuring December 20, a monsoonal trough of low pressure that had been fluctuating to the north and south of the Fijian dependency of Rotuma, started to move northwards towards the Tuvaluan island of Funafuti. As the trough moved northwards over the next few days, as the trough moved northwards