Nav: Home

Tropical Cyclone Son-Tinh makes landfall and NASA examines its trail of rainfall

July 19, 2018

Tropical Cyclone Son-Tinh made landfall in Vietnam and left a trail of heavy rainfall in its wake. NASA's Global Precipitation Measurement mission or GPM core satellite provided an estimate of that soggy trail through the Gulf of Tonkin.

Tropical storm Son-Tinh struck Hainan Island, China and was headed toward northern Vietnam when the GPM core observatory satellite passed over the Gulf of Tonkin, South China Sea on July 17, 2018 at 6:49 p.m. EDT (2249 UTC). Data collected by GPM revealed that heavy rainfall was already occurring in the Gulf of Tonkin well to the west of tropical storm Son-Tinh's center of circulation.

GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA. GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) data showed the locations of heavy rainfall in storms in the western Gulf of Tonkin. GPM's radar (DPR Ku Band) scans of that stormy area revealed that precipitation was dropping at a rate of well over 97 mm (3.8 inches) per hour.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland a simulated 3-D observation of precipitation in the Gulf of Tonkin was created with data collected by GPM's radar (DPR Ku Band). The 3-D view showed heavy downpours were returning strong radar echoes to the GPM satellite. Storm tops in the most powerful storms were found by DPR to reach heights of about 16 km (9.9 miles).

At 5 p.m. EDT (2100 UTC) on July 18, Tropical Storm Son-Tinh made landfall in northern Vietnam and the Joint Typhoon Warning Center issued their final warning on the system. At that time, it had maximum sustained winds near 45 knots (52 mph/83 kph). It was located near 19.0 degrees north latitude and 105.5 degrees east longitude, about 122 nautical miles south of Hanoi, Vietnam. Son-Tinh was moving to the west at 12 knots (13.8 mph/22.2 kph).

Son-Tinh brought heavy rainfall over northern Vietnam and Laos and is expected to dissipate soon.

For updated forecasts from the Vietnam Meteorological and Hydrological Administration, visit: http://www.nchmf.gov.vn
-end-


NASA/Goddard Space Flight Center

Related Precipitation Articles:

NASA observes Tropical Storm Dora dissipating rapidly
Two days of satellite imagery from the Global Precipitation Measurement mission or GPM core satellite showed that Dora, formerly a hurricane, went from generating moderate rainfall to barely any rainfall.
Forecasting strong precipitation -- the potential of potential deformation
A new parameter, called potential deformation (PD), is used in a simulated mesoscale convective system (MCS) to examine its performance in precipitation diagnosis.
Dartmouth-led study finds heavier precipitation in the northeast began in 1996
Over the past century, the Northeast has experienced an increase in the number of storms with extreme precipitation.
NASA sees powerful storms with advancing monsoon in Bay of Bengal
Storms associated with the advancing monsoon in the Northern Indian Ocean's Bay of Bengal were analyzed by NASA with the GPM or Global Precipitation Measurement mission core satellite.
Understanding changes in extreme precipitation
An ETH study explores why the increase in extreme precipitation is not the same across every region.
Lake water recharged by atmospheric precipitation in the Badain Jaran Desert
The water sources for the many of the lakes in the Badain Jaran Desert have been the focus of controversy in recent years.
Microphysical differences in precipitation between Tibet and southern China
Studies of raindrop size distribution (DSD) over different regions helps to advance our understanding of DSD characteristics and provide observational facts regarding the development and evaluation of microphysical parameterization schemes in numerical models over different regions in the future.
NASA sees vertical wind shear affecting Tropical Storm Muifa
Vertical wind shear can weaken a tropical cyclone and that's what's happening to the now weaker Tropical Depression Muifa in the Northwestern Pacific Ocean.
University of Montana researcher: Heavy precipitation speeds carbon exchange in tropics
New research by the University of Montana and its partner institutions gives insight into how forests globally will respond to long-term climate change.
Antarctic Mesoscale Prediction System precipitation products prove to be reliable
The Antarctic Mesoscale Prediction System (AMPS) is a key tool--specifically, for studying precipitation over the region.

Related Precipitation Reading:

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Changing The World
What does it take to change the world for the better? This hour, TED speakers explore ideas on activism—what motivates it, why it matters, and how each of us can make a difference. Guests include civil rights activist Ruby Sales, labor leader and civil rights activist Dolores Huerta, author Jeremy Heimans, "craftivist" Sarah Corbett, and designer and futurist Angela Oguntala.
Now Playing: Science for the People

#521 The Curious Life of Krill
Krill may be one of the most abundant forms of life on our planet... but it turns out we don't know that much about them. For a create that underpins a massive ocean ecosystem and lives in our oceans in massive numbers, they're surprisingly difficult to study. We sit down and shine some light on these underappreciated crustaceans with Stephen Nicol, Adjunct Professor at the University of Tasmania, Scientific Advisor to the Association of Responsible Krill Harvesting Companies, and author of the book "The Curious Life of Krill: A Conservation Story from the Bottom of the World".