1977 Global Tropical Cyclones Outside the Northwest Pacific

Included in this database in 1977 18 Tropical cyclones outside the Northwest Pacific: South Pacific, 18. Strongest of the year: Tropical Cyclone Bob (Approx. 51.4 m/s). For Northwest Pacific typhoons, see 1977 Typhoon .

Data reliability:
● ReliableWeather satellites monitored these systems throughout, resulting in relatively accurate tracks and intensities (Atlantic and Eastern Pacific from 1966; other basins from 1980)
● Generally reliableAircraft entered typhoons for direct measurements, but satellites were not yet widespread: tracks are generally accurate, while intensities may be biased and weaker cyclones may be missing (from 1950 until satellite coverage became widespread)
● Inferred dataWith no satellites or aircraft that year, intensities were retrospectively estimated from records from ships and coastal weather stations (before 1950)
● Track onlyOnly approximate positions are available, with no wind speed or pressure records, so they are excluded from intensity rankings (mostly early records from the Indian Ocean and Southern Hemisphere)

The name	English Name	ocean area	Peak Category	Max Wind(m/s)	Minimum Pressure (hPa)	Formation Date	数据可信度 ⓘ
Marion	Marion	South Pacific	3级Tropical Cyclone	36	980	1977-01-11	较可靠
June	June	South Pacific	3级Tropical Cyclone	36	965	1977-01-17	较可靠
Keith	Keith	South Pacific	1级Tropical Cyclone	25.7	-	1977-01-30	较可靠
-	-	South Pacific	1级Tropical Cyclone	22.1	990	1977-02-03	较可靠
Lily	Lily	South Pacific	1级Tropical Cyclone	20.6	-	1977-02-09	较可靠
Miles	Miles	South Pacific	1级Tropical Cyclone	23.1	-	1977-02-10	较可靠
Nancy	Nancy	South Pacific	Tropical Depression	18	-	1977-02-12	较可靠
-	-	South Pacific	1级Tropical Cyclone	22.1	990	1977-02-20	较可靠
Otto	Otto	South Pacific	2级Tropical Cyclone	28.3	-	1977-03-07	较可靠
Norman	Norman	South Pacific	1级Tropical Cyclone	22.1	980	1977-03-09	较可靠
Pat	Pat	South Pacific	2级Tropical Cyclone	30.4	980	1977-03-15	较可靠
Robert	Robert	South Pacific	3级Tropical Cyclone	41.2	965	1977-04-16	较可靠
Tom	Tom	South Pacific	1级Tropical Cyclone	25.7	997	1977-11-05	较可靠
Steve	Steve	South Pacific	2级Tropical Cyclone	33.4	965	1977-11-24	较可靠
Tessa	Tessa	South Pacific	1级Tropical Cyclone	20.6	990	1977-12-05	较可靠
-	-	South Pacific	-	-	-	1977-12-22	仅路径
Anne	Anne	South Pacific	2级Tropical Cyclone	28.3	980	1977-12-23	较可靠
Bob	Bob	South Pacific	4级Tropical Cyclone	51.4	-	1977-12-31	较可靠

Data sources: NOAA IBTrACS v04r01; 等级按各ocean area当地机构分级换算, for reference only.