Âé¶¹ÒùÔº


NASA watching stubborn remnants of ex-Tropical Cyclone Iris

NASA watching stubborn remnants of ex-Tropical Cyclone Iris
On April 10 the VIIRS instrument aboard NASA-NOAA's Suomi NPP satellite captured a true-color image of Iris' elongated remnants in the South Pacific Ocean. Credit: NOAA/NASA Goddard Rapid Response Team

Former Tropical Cyclone Iris continues to linger in the Southwestern Pacific Ocean off the coast of Queensland, Australia. NASA-NOAA's Suomi NPP satellite passed over the remnants of Iris on April 10.

On April 10 at 0230 UTC (April 9 at 10:30 p.m. EDT) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite captured a true-color image of Iris' remnants. The VIIRS image showed a large, elongated low pressure area. That's because Iris' remnants were experiencing moderate to high vertical winds shear, as strong as 25 knots (28.7 mph/46.3 kph).

Animated multispectral satellite imagery showed scattered convection directly over a defined but broad low-level center.

At 1500 UTC (11 a.m. EDT) Iris' remnants were located near 12.7 degrees south latitude and 153.5 degrees east longitude. That's approximately 513 nautical miles east-northeast of Cairns, Australia. The Joint Typhoon Warning Center or JTWC noted "Some global computer forecast models predict the remnant low pressure area turning southwestward and re-developing into a tropical cyclone in the next several days, though not all maintain the circulation." Maximum sustained surface winds are estimated at 20 to 25 knots (23 to 28.7 mph/37 to 46.3 kph).

Iris' remnants are moving through warm sea surface temperatures, warmer than 80 degrees Fahrenheit (26.6 degrees Celsius). That's warm enough to help the storm re-develop. The potential for the development of a significant tropical cyclone within the next 24 hours remains low, but the JTWC is keeping a close eye on Iris for possible re-generation.

Citation: NASA watching stubborn remnants of ex-Tropical Cyclone Iris (2018, April 10) retrieved 9 June 2025 from /news/2018-04-nasa-stubborn-remnants-ex-tropical-cyclone.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.

Explore further

NASA finds Tropical Cyclone Iris' remnants lingering

12 shares

Feedback to editors