Tropical Cyclone Ava - Jan 2018Ongoing
Madagascar is on alert following the identification of a low weather pressure system off the north-east coast of the country, which is expected to strengthen in the southwestern Indian Ocean basin. The weather system is already causing weather disturbances in northern Madagascar and on the islands of Réunion and Mauritius. It is expected to gain strength during the week as it tracks westward, prior to making landfall on Madagascar on 4 or 5 January 2018 (OCHA, 3 Jan 2018)
Tropical Cyclone AVA reached Madagascar’s northeast coast in the afternoon of 5 January. Heavy rains associated with AVA have been recorded in the north, north-east and east of the country since 3 January. Rising water levels have been observed in the Alaotra Mangoro and Analanjirofo regions, while flooding, interruptions to communications networks and power cuts have been reported in Fokontany Ambinany (Soanierana Ivongo). Preventive evacuations began in Brickaville on 4 January. The Malagasy authorities have issued a red alert (imminent threat) for the regions of Analanjirofo, Atsinanana and Alaotra Mangoro for 4 to 5 January, and Vatovavy Fitovinany for 5 to 6 January. In addition, several districts remain on yellow and green alert.(OCHA, 5 Jan 2018)
Tropical cyclone AVA continued moving south along the eastern coast of the country as Tropical Storm. On 8 January at 0.00 UTC its centre was located off the eastern coast of Madagascar, 200 km north-east of Taolagnaro city (Madagascar) and 800 km south-west of La Reunion island, and it had maximum sustained winds speed of 74 km/h (Tropical Storm). Over the next 24 hours, it is forecast to keep moving, heading south away from Madagascar and weakening. Heavy rain, strong winds and a storm surge could still affect southern and eastern regions of Madagascar. (ECHO, 8 Jan 2018)
According to the Malagasy authorities, as of 9 January, about 123,000 people had been directly or indirectly impacted by Tropical Cyclone Ava, with 24,800 people evacuated, 33 dead and 22 missing.
The cyclone damaged 19 health centres and affected 141 schools, including 77 classrooms used as shelter for displaced people. About 34,640 children are out of school.
Road access to some south-eastern and southwestern parts of the country has been cut off. River levels have started to moderately decrease in Antananarivo and in the south-eastern coast.
However, evacuated people are still staying in several temporary sites. Remaining displaced people are mainly in Antananarivo and in the south-eastern coast; while almost all displaced people in Brickaville and Toamasina have already returned to their homes. It is common that the number of displaced people reduces in the days following a cyclone, as people return home if there are no floods or landslide threat. (OCHA, 8 Jan 2018)
Most read (last 30 days)
- Flash Update: Tropical Storm AVA Approaching Madagascar | 3 January 2018
- Flash Update #3: Tropical Cyclone AVA Reaches Madagascar | 5 January 2018
- Madagascar - Tropical Cyclone AVA Update (GDACS, JTWC, National authorities) (ECHO Daily Flash of 6 January 2018)
- Flash Info: La tempête tropicale AVA s'approche de Madagascar, 3 janvier 2018
- Flash Update: Tropical Storm AVA Approaching Madagascar | 4 January 2018
This map illustrates satellite-detected water extent as of 07 January 2018 over Brickaville distric, Atsinanana region, in Madagascar as detected by Sentinel-1. As of 07 January 2018, ~ 2600 ha of land over Brickaville commune seem to be inundated and 2400 in Andovoranto commune. These zones are mainly agricultural and/or swamps. These waters seem to be the results of the recent heavy rain related also to the cyclone AVA-18 which made landfall the 05 January 2018.
• Tropical Cyclone AVA left Madagascar on 6 January.
• The cyclone caused heavy rainfall and strong winds along the coast and the highland.
• Thousands of people have been affected and displaced.
• Six deaths and two missing people have been reported.
Tropical cyclone AVA continued moving south along the eastern coast of the country as Tropical Storm. On 8 January at 0.00 UTC its centre was located off the eastern coast of Madagascar, 200 km north-east of Taolagnaro city (Madagascar) and 800 km south-west of La Reunion island, and it had maximum sustained winds speed of 74 km/h (Tropical Storm).
Over the next 24 hours, it is forecast to keep moving, heading south away from Madagascar and weakening. Heavy rain, strong winds and a storm surge could still affect southern and eastern regions of Madagascar.
BULLETIN CYCLONIQUE SPECIAL DU 07 JANVIER 2018 A 16 HEURES LOCALES
La Tempête AVA est localisée à 170 Km au Sud-Est de Farafangana. Le vent moyen reste à 65 Km/h avec des rafales de 90 Km/h. Elle va continuer son trajet suivant un Cap Sud à un rythme moyen de 15 Km/h. Le danger semble écarté pour Madagascar. Toutefois, des vigilances doivent toujours être de mise face aux montées des eaux et le risque secondaire de glissement de terre.
La Tempête AVA est localisée à 185 Km au Sud-Est de Taolagnaro à 09 heures locales. Le vent moyen reste à 65 Km/h avec des rafales de 90 Km/h. Elle va continuer son trajet suivant un Cap Sud en s’éloignant totalement de notre pays à un rythme moyen de 15 Km/h. Le danger est écarté pour Madagascar.
Toutes les alertes cyclones sont levées.
La sortie en mer reste déconseillée pour les côtes Sud-Est et Sud du pays. Ailleurs, la navigation marine côtière requiert toujours prudence face aux vagues qui peuvent localement atteindre 3 mètres.
Du vent fort a été ressenti sur Antananarivo et ses environs presque toute la nuit due à la présence de la zone orageuse dans la partie Nord Ouest de Madagascar. D’après la Direction Générale de la Météorologie, le vent devrait s’affaiblir à partir de cet après-midi.
Les pluies sont encore en rendez-vous pour les 5 prochains jours mais de faible quantité (inférieur à 10mm à partir de demain).
SITUATION METEOROLOGIQUE EN DATE DU 07 JANVIER 2018 à 13 HEURES LOCALES
D’après la Direction Générale de la Météorologie (DGM), « AVA » est au stade de Tempête Tropicale Modérée (TTM). Il est accompagné d’un vent moyen de 65 km/h alterné par des rafales de 90km/h. A 13 heures locales, son centre est localisé à 120 km au Sud-Est de Manakara. Il continue son déplacement vers le Sud-Est avec une vitesse de 15 km/h.
A 16h00, AVA était dans le district de Mananjary. Le système est maintenant affaibli. En tant que depression tropciale, il apportait des vents moyens de 55km/h avec des rafales de 80km/h.
- Tropical Cyclone AVA continued moving toward the eastern coast of Madagascar. On 5 January at 00:00 UTC, its centre was located approximately 155 km north-east of Toamasina city with maximum sustained winds of 139 km/h.
NASA-NOAA’s Suomi NPP satellite passed over Tropical Cyclone Ava as it made landfall along the coast of northeastern Madagascar.
On Jan. 5 at 5:24 a.m. EST (1024 UTC) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite showed the eye of Ava over the northeastern coast near Mahavelona. Mahavelona is a town located in the district of Toamasina II, in the region of Atsinanana. The eye is about 10 nautical miles wide on satellite imagery.
• Tropical Cyclone AVA reached the north-east coast of Madagascar on 5 January.
• The system is expected to continue southward along the coast over the weekend.
• The cyclone is causing heavy rainfall and strong winds.
• The Malagasy authorities have issued red alerts for the regions of Analanjirofo, Atsinanana and Alaotra Mangoro for 4 to 5 January and Vatovavy Fitovinany for 5 to 6 January.
Tropical Storm AVA is expected to strengthen during the next 24 hours off the north-east coast of Madagascar.
The system has changed trajectory but is still expected to move towards the east coast of Madagascar on 5 January 2018 and continue southward along the coast.
The system is already causing heavy rainfall in affected areas of Madagascar and is impacting weather patterns in Réunion Island and Mauritius.
Tropical Storm AVA is the first named storm of the season in the Indian Ocean.
Antananarivo, 4 January 2018 – Madagascar is on high alert as Tropical Cyclone Ava moves towards the island. Red Cross disaster response teams are readying response plans in anticipation of the cyclone’s landfall.
“*Right now, our major concern is flooding as a result of the expected heavy rains. We’ve activated our national disaster response team, and Red Cross volunteers in all the districts are on high alert*,” said Izaka Harizaka, acting Secretary General, Malagasy Red Cross.
Tropical Cyclone AVA continued moving southwest towards the eastern coast of Madagascar. On 4 January at 00:00 UTC, its centre was located approximately 340 km north-east of Toamasina city and approximately 555 km north-east of Antananarivo, with a maximum sustained winds of 83 km/h (Tropical Storm).