NASA finds a stronger Ava now tracking along Madagascar's coast

January 04, 2018

NASA satellites provided data that showed a more well-formed storm and strong thunderstorms with heavy rainfall potential over central Madagascar and off-shore.

On Jan. 4 at 5:05 a.m. EST (1005 UTC), the Atmospheric Infrared Sounder or AIRS instrument that flies aboard NASA's Aqua satellite gathered temperature data on the storm using infrared light. Infrared imagery showed that strong thunderstorms were over east central Madagascar and over the center of the storm's circulation, which is located off-shore from northeastern Madagascar. Cloud tops were as cold as minus 63 degrees Fahrenheit (minus 53 degrees Celsius). NASA research has shown that storms with cloud top temperatures that cold can generate heavy rainfall.

On Jan. 4 at 5:42 a.m. EST (10:42 UTC) NASA-NOAA's Suomi NPP satellite captured this visible image of Tropical Cyclone Ava just off shore of northeastern Madagascar. The image showed a more well-rounded circulation center off the northeastern coast of Madagascar, and a large, thick band of thunderstorms feeding into the center that stretched along the north and central coasts of the island nation.

At 10 a.m. EST (1500 UTC) on Jan. 4, Ava's maximum sustained winds had increased to 55 knots (63 mph/102 kph). It was centered near 17.5 degrees south latitude and 51.1 degrees east longitude. That's about 289 nautical miles northwest of St Denis, Reunion Island. It was moving to the west at 6 knots (6 mph/11 kph).

Météo Madagascar, the national weather service for the country has issued a yellow alert that covers a large area of the island's east coast. For updated warnings, visit:

Ava is expected to strengthen to 70 knots (80 mph/130 kph) by Jan. 5 as it travels southward along the east coast of Madagascar over the next 5 days, when it is expected to move south of the island nation on Jan. 9.

NASA/Goddard Space Flight Center

Related Madagascar Articles from Brightsurf:

Humans and climate drove giants of Madagascar to extinction
The entire endemic megafauna of Madagascar and the Mascarene islands Mauritius and Rodrigues was eliminated during the past millennium.

Madagascar: New mouse lemur species discovered
Group of researchers, from six countries, identified, genetically and morphologically, a new population of rats (Microcebus) that inhabit the same forests as another usual species previously described.

Madagascar copal: New dating for an Antropocene ancient resin
The known Madagascar copal is a more recent resin from what was thought -it has about a few hundred years- and trapped pieces in this material are not as palaeontological important as thought traditionally.

Marooned on Mesozoic Madagascar
In evolutionary terms, islands are the stuff of weirdness. It is on islands where animals evolve in isolation, often for millions of years, with different food sources, competitors, predators, and parasites...indeed, different everything compared to mainland species.

Unraveling the puzzle of Madagascar's forest cats
Michelle Sauther has long wondered where Madagascar's mysterious wild cats came from.

Habitat fragmentation imperils Madagascar's large-bodied lemurs
A new study in the American Journal of Primatology highlights the critical need for conservation efforts to protect lemurs on Madagascar.

The importance of Madagascar's lowland rainforest for lemur conservation
Throughout their evolutionary history, animals in regions with limited lowland habitat have evolved to adapt to higher elevations.

Mosquito surveillance uncovers new information about malaria transmission in madagascar
Riley Tedrow, Ph.D., a medical entomologist at Case Western Reserve University School of Medicine, has uncovered new findings about malaria transmission in Madagascar.

Severely disturbed habitats impacting health of Madagascar's lemurs
A new study finds that degraded rainforest habitats are impacting the health of at least one species of Madagascar's treasured lemurs.

The last chance for Madagascar's biodiversity
A group of scientists from Madagascar, UK, Australia, USA and Finland have recommended actions the government of Madagascar's recently elected president, Andry Rajoelina should take to turn around the precipitous decline of biodiversity and help put Madagascar on a trajectory towards sustainable growth.

Read More: Madagascar News and Madagascar Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to