south west indian_ocean cyclone season south west indian_ocean cyclone season average ongoing weak monsoon suppressed convection storms named storms tracked france office united_states based followed storms basin waters indian_ocean south equator west coast africa tracked storm august northeastern portion basin unusual time year named storm severe tropical storm originated convergence zone east madagascar middle january unnamed tropical depression produced heavy rainfall madagascar causing deaths country february tropical storms active near tropical storm weak storm took erratic track island tropical storm damaging season stalled near days producing rainfall rainfall totals approached world record precipitation totals set rains killed people destroyed houses caused million usd damage later march strongest storm season attain tropical cyclone status reaching mph final storm season tracked forming south madagascar april dissipating april seasonal summary season france office island issued warnings tropical cyclones basin satellite imagery agency estimated intensity dvorak technique warned tropical cyclones region coast africa south equator later label joint united_states navy united_states_air_force task force issued tropical cyclone warnings southwestern indian_ocean season named storms tropical cyclone storm attaining maximum sustained winds mph average respectively considered tropical cyclone year begin august continue july following year ongoing december january monsoon weaker normal region caused normal thunderstorm activity february addition storms classified tracked additional storms classified tropical cyclone formed august northeastern portion basin event time year storm moved westward peak minute winds mph gradually weakened dissipating august near tracked short lived storm january classified tropical cyclone storm formed january eastern portion basin near reached winds mph moving southeastward january system dissipated days later later agency monitored beginning april storm formed south moved direction southeast later north reaching peak minute winds mph storm dissipated april final storm tracked agency originated june far northeastern portion basin moved slowly southwest failing intensify winds mph turning southeast system dissipated june track tropical depressions january making january official storm season earlier tropical depression originated low pressure area january near large system spread rainfall madagascar days january depression consisted circulation spiral rainbands west system moved southward intensifying passed west january near island depression dropped heavy rainfall broke hour totals locations peaking dos system intensified slightly afterward turned east ridge south longer tracked january madagascar heavy rainfall led flooding capital displacing people covered rice fields entered houses killing people local red_cross offices provided shelter food victims storms severe tropical storm middle january spawned area convection tropical disturbance formed day characterized spiral rainbands circulation classified system tropical cyclone january system moved southeast intensifying tropical storm status january named later day upgraded storm equivalent minimal hurricane storm quick organization passing east january estimated peak minute winds mph assessed peak minute winds mph subsequently storm weakened turned sharply westward january building ridge south day storm weakened tropical depression status discontinued advisories quickly retained tropical storm status ridge turned east storm turned southeast day reissued advisories shortly agency upgraded equivalent hurricane second time short lived rapidly weakened accelerating southeast dissipating january absorbed moderate tropical storm produced area convection north february organizing tropical disturbance day northeast system initially consisted spiral rainbands organizing center moving quickly southwest disturbance passed west february producing wind gusts mph likely localized vortex despite disturbance named system february day depression turned sharply east nearby ridge passing southeast mauritius intensified moderate tropical storm february attaining peak minute winds mph turned northeast weakened tracked satellite imagery weak circulation looped west beginning february turning southeast west dissipated february southeast south formed tracked severe tropical storm active circulation present madagascar february day tropical disturbance formed east southeast madagascar ridge south caused nascent system erratic generally southeast east intensified tropical storm february day classified tropical cyclone storm slowed approached moved slowly near island days remained northern coast february attained peak minute winds mph weak ridge steered storm southwest february struck northern ridge moved east causing storm accelerate gradually weaken february extratropical turning southeastward approaching trough remnants persisted days dissipating february near affected mauritius gusty winds heavy rainfall flooded homes effects worst wind gusts reached mph rainfall totaled approached record setting rains hour period damaged houses destroyed people island lost access water roads damaged killed people island damage totaled million usd areas convection persisted early march open indian_ocean organized tropical storm march south given following day began tracking tropical cyclone moved slowly initially quickly strengthening severe tropical storm march weak ridge steered storm east storm weakened slightly time days later stronger ridge east turned southwest bringing path march upgraded storm equivalent minimal hurricane following day upgraded tropical cyclone status estimating peak minute winds mph weakened tropical storm march storm accelerated southeast day maintained intensity interactions nearby anticyclone march turned southwest moving southward later southeast march storm dissipated polar trough northwest severe tropical storm middle april moist air equator reached circulation southeast madagascar associated trough april tropical disturbance formed southeast southernmost point madagascar strong ridge south steered system westward bringing south island april days strengthening system began intensifying steadily april moderate tropical storm day named classified tropical cyclone time storm turned sharply south passing trough late april upgraded equivalent minimal hurricane day estimated peak minute winds mph estimated minute winds mph ridge turned storm eastward gradually weakened deteriorating tropical depression status april days later system turned westward drift small ridge turned south day ridge weak circulation accelerated southeast polar trough dissipating april passed south madagascar effects minimal storm caused large fall barometric pressure fort drop mbar inhg hours season effects
1986–87 South-West Indian Ocean cyclone season