WORLD METEOROLOGICAL ORGANIZATION
___________________________
RA I/TCC-XVIII/Doc. 4.2(3)
(12.IX.2008)
__________
RA I TROPICAL CYCLONE COMMITTEE
FOR THE SOUTH-WEST INDIAN OCEAN
EIGHTEENTH SESSION
ITEM 4.2
LILONGWE, MALAWI
6 TO 10 OCTOBER 2008
Original: FRENCH
REVIEW OF THE 2005/2006, 2006/2007 AND 2007/2008 CYCLONE SEASONS
Reports of Members
(Submitted by Madagascar)
__________
REVIEW OF THE 2005-2006, 2006-2007
AND 2007-2008 CYCLONE SEASONS
2005-2006 CYCLONE SEASON
This season was fairly calm in Madagascar with one cyclonic disturbance “Boloetse” affecting
the main island. At the stage of tropical disturbance, this system made landfall on the central eastern
coast in the district of Nosy Varika. It crossed the island and passed into the Mozambique Channel
where it intensified; at the tropical cyclone stage it made landfall again in the south west in the district
of Ampanihy.
Characteristics
Rainfall
(in 24 h)
Place
Mahanoro
Morondava
Morombe
Toliara
Maximum wind speed
in mm
131.2
117.9
date
28/01/06
03/02/06
in km/h
date
85
03/02/06
130.6
03/02/06
83
144
04/02/06
04/02/06
Damage: (source Bureau National pour la Gestion des Risques et Catastrophes – National Bureau
for Managing Risks and Disasters)
Homeless: 528
Casualties: 6537
Trajectory:
2006-2007 CYCLONE SEASON
A season of intense activity, as four cyclonic disturbances affected the main island.
 “Bondo”, a small system (diameter: 300 km) made landfall in the north west, 35 km north of the town of Mahajanga at
the stage of strong tropical storm. As it moved to the south west, it brought torrential rain to the north of the island
before dissipating in the Mozambique Channel.
 “Clovis” made landfall on the south east of the island at the strong tropical storm stage in the district of Nosy Varika
and filled the next day in the district of Mananjary after describing a loop over the land.
 “Indlala”, a huge system 600 km in diameter, arrived at the town of Antalaha at the intense tropical cyclone stage. It
filled after two days in the centre of the island in the district of Ankazobe. When crossing the island, the system
caused heavy rain in the north.
 “Jaya”, a small system (diameter <200 km), made landfall in the north east of the island in the district of Antalaha at
the strong tropical storm stage. This system caused heavy rain on the east coast. Jaya went out to sea and
dissipated in the Mozambique Channel.
Characteristics
Cyclonic
disturbances
Bondo
Clovis
Place
Antsiranana
Antalaha
Mahajanga
Mananjary
Antalaha
Indlala
Antsohihy
Sainte Marie
Mahajanga
Jaya
Sambava
Antalaha
Toamasina
Rainfall (in 24 h)
Maximum wind speed
in mm
date
in km/h
date
131.9
142.1
179.0
92.2
121.7
355.2
344.7
240.7
107.9
221.2
141.3
144.0
216.1
23/12/06
24/12/06
25/12/06
03/01/07
04/01/07
14/03/07
15/03/07
16/03/07
15/03/07
16/03/07
03/04/07
03/04/07
03/04/07
80
23/12/06
155
25/12/06
245
15/03/07
125
125
03/04/07
03/04/07
Trajectory:
Damage:
(source Bureau National pour la Gestion des
Risques et Catastrophes – National
Bureau for Managing Risks and
Disasters)
Cyclonic
disturbances
Dead
Injured
Homeless
Bondo
11
1
20.001
Clovis
Indlala
Jaya
4
150
1
2
126
2
13.465
188.331
8.015
2007-2008 CYCLONE SEASON
This was an active season on the main island as three systems made landfall on Madagascan territory.



“Fame” At 13 UT on 27 January 2008, the eighth cyclonic disturbance of the season strengthened as expected. This strong
tropical storm generated winds of 120 to 160 km/h with a pressure at the centre estimated at 972 hPa and a T-Dvorak number
of 4.0+. It headed for the town of Besalampy at a ground speed of 16 km/h. On 28 January 2008 at 06 UT, Fame was
accompanied by torrential rain.
“Ivan” at the intense tropical cyclone stage made landfall on the east coast of Madagascar between Sainte-Marie and
Fenerive-Est with gusts of wind in excess of 250 km/h at Sainte-Marie accompanied by heavy rain that caused flooding in the
town of Toamasina; Ivan crossed the main island from east to west, weakening as it went. It went out to sea with average
wind speeds of less than 70 km/h.
In the Indian Ocean, moderate tropical storm “Jokwe” rapidly approached the north-east coasts of Madagascar (speed = 28
km/h). With this momentum, it made landfall a few kilometres from the town of Antsiranana and went out to sea in the
Mozambique Channel, where the surface sea temperature caused it to intensify. Jokwe went on to become an intense tropical
cyclone on 11 March 2008 after skirting the north-east coast of Mozambique on 8 March 2008.
Noteworthy in this cyclonic season is the heavy rainfall caused by the two successive systems Fame and Ivan, leading to flooding
in the northern and central parts of the island.
Characteristics
Cyclonic
disturbances
Fame
Ivan
Jokwe
Trajectory:
Rainfall
(in 24 h)
Place
Besalampy
Mahajanga
Sainte-Marie
Toamasina
Antsiranana
Nosy Be
Toamasina
Maximum wind speed
in mm
date
in km/h
date
146.7
76.5
28/01/08
28/01/08
120
27/01/08
> 250
17/02/08
261
17/02/08
> 100
75
05/03/08
05/03/08
130
17/02/08
Damage: (source Bureau National pour la Gestion des Risques
et Catastrophes – National Bureau for Managing
Risks and Disasters)
Cyclonic
disturbances
Dead
Injured
Fame
11
1
Ivan
93
639
Jokwe
Missing
Homeless
20.001
176
332.391
400
CYCLONE WARNING SYSTEM
IN MADAGASCAR
AUTHORITIES
-President
-Prime Minister
-MTPM
-Other
ministries
RADIO
and
TELEVISION
(national or private)
OTHER USERS:
- International NGOs
- National NGOs
- Others
PROVINCES
and
DISTRICTS
Print media
National Bureau for
Managing Risks and
Disasters (B.N.G.R.C)
Regional
Emergency
Council (C.R.S)
LOCAL RADIO
WEATHER
STATIONS
Local Emergency
Committee (C.L.S)
INTERREGIONAL
WEATHER
SERVICES
- Army HQ
- Police HQ
LOCAL AUTORITIES
and
local public security managers
P O P U L A T I O N
NATIONAL ALERT SYSTEM
Strengths
Weaknesses
Several centres spread over the island
Enclave areas are not recorded
Information reaches the areas concerned by
several means.
In the event of high intensity systems (ITC, VITC),
the impact zones are cut off from all contact
(power cuts, telephone, etc.)