NASA Northern quadrant strength in Tropical Cyclone Lili

Tech

200680_web.jpg

IMAGE: At 12:50 a.m. EDT (0450 UTC) on May 10, 2019, the MODIS instrument that flies aboard NASA's Aqua satellite gathered infrared data on Tropical Cyclone Lili. Strongest thunderstorms north of... view more 

Credit: NASA/NRL

NASA's Aqua satellite used infrared light to analyze the strength of storms in Tropical Cyclone Lili as it moved through the Southern Indian Ocean. Infrared data provides temperature information, and the strongest thunderstorms that reach high into the atmosphere have the coldest cloud top temperatures.

At 12:50 a.m. EDT (0450 UTC) on May 10, the Moderate Imaging Spectroradiometer or MODIS instrument that flies aboard NASA's Aqua satellite gathered infrared data on Lili. Strongest thunderstorms were north of the center where MODIS found cloud top temperatures as cold as minus 50 degrees Fahrenheit (minus 45.5 Celsius).

At 11 a.m. EDT (1500 UTC), the Joint Typhoon Warning Center or JTWC noted that Lili's maximum sustained winds were near 35 knots (40 mph/74 kph). At the time, Lili was centered near 9.3 degrees south latitude and 128.2 degrees east longitude, about 238 nautical miles northwest of Darwin, Australia. Lili has tracked to the west-northwest at 3 knots (3.4 mph/5.5 kph).

At 8 a.m. EDT (1248 UTC) animated enhanced infrared satellite imagery and a microwave satellite image showed a partially-exposed low-level circulation with isolated strong thunderstorms now over the southern quadrant. Satellite imagery shows that dry air has been feeding into the storm and sapping the storm's ability to generate the thunderstorms it needs to be maintained. That dry air "entrainment" or movement into Lili is expected to continue. Lili is forecast to track to the west-northwest and dissipate in a day.

###

By Rob Gutro
NASA's Goddard Space Flight Center

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.

Source Link

Articles You May Like

Scientists have finally captured an enigmatic jellyfish that looks like a plastic bag
AI That Can Argue and Instruct
Here's the frustrating reason only one side of your nose gets blocked at a time
Green spaces can help you trust strangers
Machine-learning model provides detailed insight on proteins