NASA finds strongest storms off-center in Tropical Storm 14W

NASA finds strongest storms off-center in Tropical Storm 14W  
On Sept. 4 at 7:40 a.m. EDT (1130 UTC ).the MODIS instrument that flies aboard NASA's Terra satellite showed strong storms (yellow) around 14W's center where cloud top temperatures were as cold as minus 80 degrees Fahrenheit (minus 62.2 Celsius). Credit: NASA/NRL

NASA's Terra satellite provided an infrared view and temperature analysis of Tropical Storm 14W's cloud tops. Terra satellite showed some powerful thunderstorms in the storm were east of the center.

On Sept. 4 at 7:40 a.m. EDT (1130 UTC), the Moderate Imaging Spectroradiometer or MODIS instrument that flies aboard NASA's Terra satellite used to analyze the strength of storms within the 14W. NASA researches these storms to determine how they rapidly intensify, develop and behave.

The Joint Typhoon Warning Center noted that, "Satellite imagery shows a partially exposed low-level circulation center with an area of deep convection (thunderstorms) offset to the east of the center." Just as on Sept. 3, the low-level circulation center of the storm remained exposed to outside westerly winds so the strongest thunderstorms continue to be pushed to the eastern side of the storm.

Tropical cyclones are made of up hundreds of thunderstorms, and infrared data can show where the strongest storms are located. They can do that because infrared data provides temperature information, and the strongest thunderstorms that reach highest into the atmosphere have the coldest cloud top temperatures.

MODIS found those strongest storms were around the center of circulation where cloud top temperatures were as cold as minus 80 degrees Fahrenheit (minus 62.2 Celsius). NASA research has found that cloud top temperatures that cold indicate strong storms with the potential to generate .

The Joint Typhoon Warning Center (JTWC) noted on Sept. 4 at 11 a.m. EDT (1500 UTC), Tropical Storm 14W still had maximum sustained winds near 35 knots (40 mph/65 mph). 14W is far from land areas and is about 1,429 nautical miles southeast of Yokosuka, Japan. 14W is moving to the west.

JTWC said 14W will move west-northwest across the Pacific Ocean and gradually intensify to 90 knots after five days.


Explore further

NASA finds tropical storm 14W strengthening

Citation: NASA finds strongest storms off-center in Tropical Storm 14W (2019, September 5) retrieved 19 October 2019 from https://phys.org/news/2019-09-nasa-strongest-storms-off-center-tropical.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
12 shares

Feedback to editors

User comments

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