NASA sees tropical cyclone 18p form near American Samoa


On Feb. 21, 2020, the MODIS instrument that flies aboard NASA’s Terra satellite provided a visible image of newly developed Tropical Depression 18P in the Southern Pacific Ocean. Credit: NASA Worldview

The low-pressure area that has been lingering west-northwest of American Samoa for several days has organized into a tropical depression. NASA’s Terra satellite passed over the Southern Pacific Ocean and provided forecasters with a visible image of Tropical Depression 18P.

On Feb.21, the Moderate Resolution Imaging Spectroradiometer or MODIS instrument that flies aboard NASA’s Terra satellite provided a visible image of 18P that showed an improved cyclonic circulation along the southern end of a line of deep convection and thunderstorms that extends north-to-south.
At 10 a.m. EST (1500 UTC) on Feb. 21, the Joint Typhoon Warning Center said Tropical Cyclone 18P had maximum…



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