south west indian_ocean cyclone season south west indian_ocean cyclone season average cyclone season tropical cyclones basin monitored storm formed mid november officially named days later official storm year formed december storm formed january tropical cyclones formed end month systems developed short period time early mid february nearly months inactivity unusually powerful late season storm developed mid april strongest storm year number storms season reached severe tropical storm status intensified tropical cyclones year landfall known damage recorded seasonal summary season advisories issued meteorological office time area warning responsibility coast africa agency primarily dvorak technique estimate tropical cyclones joint united_states navy united_states_air_force task force issues tropical cyclone warnings region tracked long lived tropical storm november addition storms named comparable average named storms year following season boundary basin extended storms tropical storm according tropical depression formed november far land system monitored tracking southwest lifetime upgraded system tropical storm november hours later storm attained peak intensity mph storm gradually weakened november fell depression november moderate tropical storm early november reported tropical depression developed shortly reported tropical disturbance formed low moved west southwest gradually deepening late november upgraded system moderate tropical storm storm failed intensify moved onshore northern madagascar november estimated storm weakened disturbance emerging reportedly intensified moderate tropical storm status making closest approach african mainland storm resumed weakening turning southeast november agencies stopped monitoring system moderate tropical storm morning hours december tropical cyclone developed extreme western portion australian basin crossing boundary time separated basins following day classified system tropical depression early december agency upgraded system moderate tropical storm moving steadily southwest gradually intensified turn west december day reported attained peak intensity mph time estimated attained peak intensity mph maintaining peak intensity day resumed southwesterly path far land slowly weakening december downgraded system tropical depression followed suit day moving south southwest stopped issuing advisories system extratropical continued monitor remnants system days severe tropical storm away land reported tropical disturbance developed january initially storm remained weak later january noted system intensified tropical storm continuing intensify storm moved southwest january classified system hours declared moderate tropical storm turn south southwest estimated attained peak intensity severe tropical storm utc january according storm briefly developed hurricane force winds began weakened moving south situated roughly east madagascar furthermore january briefly intensified undergoing loop january resumed weakening trend night downgraded system tropical depression moving south southwest storm upgraded moderate tropical storm days later january trend short lived evening stopped monitoring system followed suit utc january lifetime severe tropical storm brought rains reunion peaking severe tropical storm severe tropical storm originated tropical depression warned january storm moved southwest developed gale force winds system turned south utc january started monitoring low early morning upgraded system moderate tropical storm hours later estimated intensified winds equal category hurricane wind scale early morning hours january intensified severe tropical storm storm briefly turned west southwest shortly announced attained peak intensity mph suggests storm gradually weakened time suggests continued intensify estimated peaked intensity utc january time closet approach reunion passing south southeast island maintaining intensity hours rapidly weakened accelerated southeast steadily weakened late january reportedly downgraded system depression agencies stopped monitoring following day january passed east bringing heavy rains moderate tropical storm february classified system tropical depression east northern tip madagascar warned storm moved southwest briefly weakening tropical disturbance storm suddenly intensified moderate tropical storm curved southwest february stopped keeping eye system moderate tropical storm february reported moderate tropical storm formed east reunion storm drifted south days declared system tropical depression subsequently system turned north northwest slowed data suggests moderate tropical storm rapidly degenerated tropical disturbance slowly intensifying suggests gradually intensified turning west upgraded system tropical storm midday february according reached secondary peak winds mph weakening little upgraded system moderate tropical storm status slowly intensifying turned south suggest briefly weakened january turning east data shows weaken utc february january agencies agree started intensify day reported storm intensified hurricane suggests system disturbance time long hurricane remarked cyclone attained peak intensity shortly data suggests weakened turned southeast turned east southeast february briefly level intensity turning south furthermore stopped keeping eye utc february storm curved east continued track march fluctuated intensity severe tropical storm february designated later centered north day downgraded tropical depression hours later monitored system drifting east depression gradually intensified reported system regained moderate tropical storm intensity utc day early february upgraded tropical storm turned north slowing gaining strength turned east utc february declared attained peak intensity suggested peaked intensity winds mph turned south start slow weakening trend february briefly weakened tropical depression night upgraded moderate tropical storm landfall northeastern madagascar time landfall estimated tropical storm moving inland stopped monitoring system kept tracking hours headed southeast tropical cyclone april reportedly classified low far land masses later day upgraded tropical depression turning west southwest april upgraded system severe tropical storm utc day upgraded system hurricane upgraded system tropical cyclone intensity evening announced developed winds equivalent category intensity days severe tropical storm april upgraded equivalent category hurricane undergoing loop reported peaked intensity mph winds time utc april estimated attained peak wind speed winds mph attaining peak intensity storm weakened rapidly began west northwest later morning downgraded system severe tropical storm april downgraded system tropical depression day reported winds fallen hurricane force morning hours april downgraded depression shortly stopped monitoring system curving east madagascar dissipated according april storm weakening passed close causing known impact
1984–85 South-West Indian Ocean cyclone season