NASA spots developing tropical system affecting Mozambique's Nampala Province

Jan 28, 2014 by Rob Gutro
NASA's Aqua satellite passed over the Mozambique Channel on January 28 at 10:35 UTC/5:35 a.m. EST and saw some of the thunderstorms had high cloud tops, where temperatures exceeded -63F/-52C (purple). Credit: NASA JPL, Ed Olsen

NASA's Aqua satellite captured infrared data on a developing area of tropical low pressure known as System 91S that was brushing the Nampala Province of Mozambique on January 28.

Nampula is a province in northern Mozambique and its eastern coast runs along the Mozambique Channel of the Southern Indian Ocean. When NASA's Aqua satellite passed over the Mozambique Channel on January 28 at 10:35 UTC/5:35 a.m. EST the Atmospheric Infrared Sounder instrument known as AIRS captured on the clouds associated with System 91S.

AIRS showed some of the thunderstorms surrounding the low-level center of circulation had high cloud tops, where temperatures exceeded -63F/-52C, a threshold that indicates strong storms and potentially heavy rainmakers. The Joint Typhoon Warning Center noted that animated multi-spectral satellite imagery showed that the low-level center was consolidating and that there were bands of thunderstorms wrapping into the center - a sign of strengthening.

System 91S was centered near 15.4 south and 41.6 east, about 810 nautical miles northeast of Maputo, Mozambique. Maximum sustained winds are near the threshold for depression status, currently as high as 30 knots. The low is over warm enough waters to support further development.

At 11 a.m. EST on January 28, Nacala, Mozambique, located on coastal Nampula, was reporting drizzle from the fringes of System 91S with thunderstorms expected at night and on January 29.

Forecasters at the Joint Typhoon Warning Center give System 91S a high chance for becoming a tropical depression in the next day as it tracks to the southwest in the Mozambique Channel.

Explore further: NASA catches development of Tropical Cyclone 09S in Southern Indian Ocean

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Better forecasts for sea ice under climate change

1 hour ago

University of Adelaide-led research will help pinpoint the impact of waves on sea ice, which is vulnerable to climate change, particularly in the Arctic where it is rapidly retreating.

"Ferrari of space' yields best map of ocean currents

9 hours ago

A satellite dubbed the "Ferrari of space" has yielded the most accurate model of ocean circulation yet, boosting understanding of the seas and a key impact of global warming, scientists said Tuesday.

Researcher studies deformation of tectonic plates

12 hours ago

Sean Bemis put his hands together side by side to demonstrate two plates of the earth's crust with a smooth boundary running between them. But that boundary is not always smooth and those plates do not always ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.