Suomi NPP satellite sees compact storm Son-Tinh Headed for Vietnam

Suomi NPP satellite sees compact storm Son-Tinh Headed for Vietnam
On July 19, NASA-NOAA's Suomi NPP satellite captured a visible image of Tropical Storm Son-Tinh in the Gulf of Tonkin. The image showed a compact system with a small area of deep and persistent convection. Credit: NASA/NOAA/NRL

NASA-NOAA's Suomi NPP satellite flew over Tropical Storm Son-Tinh on July 18 after it crossed over Hainan Island, China and as it moved into the Gulf of Tonkin.

The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite captured a visible image that showed a compact system with a small area of deep and persistent convection.

At 5 a.m. EDT (0900 UTC) the Joint Typhoon Warning Center (JTWC) reported the center of Tropical Storm Son-Tinh was located near latitude 19.0 degrees north and longitude 107.4 degrees east. That's about 173 nautical miles southeast of Hanoi, Vietnam. Son-Tinh was moving to the west. Maximum sustained winds were near 46 mph (40 knots/74 kph).

The JTWC forecasts that Son-Tinh will continue to track westward along the southwestern edge of a subtropical ridge (elongated area) of high pressure. Despite unfavorable vertical wind shear the will track through warm and slowly weaken.

JTWC expects Son-Tinh will make landfall in northern Vietnam shortly later on July 18 (EDT) and then continue to track inland and dissipate by July 20.


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Citation: Suomi NPP satellite sees compact storm Son-Tinh Headed for Vietnam (2018, July 18) retrieved 20 June 2019 from https://phys.org/news/2018-07-suomi-npp-satellite-compact-storm.html
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