NASA infrared data sees convection building in Fiona's clouds

Sep 01, 2010
NASA's Aqua satellite captured an infrared image of Fiona's cold cloud tops on Aug. 31 at 1:05 p.m. EDT, and saw the strongest convection (purple) in the northern and southern areas around the center of circulation. Credit: NASA/JPL, Ed Olsen

Infrared satellite imagery from NASA's Aqua satellite showed some strong convection building in Tropical Storm Fiona, and her maximum sustained winds increased from 40 mph yesterday to 60 mph this morning

The Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua satellite captured an of Fiona's cold cloud tops on August 31 at 1:05 p.m. EDT and showed two major areas of strong (rapidly rising air that forms the thunderstorms that power a tropical cyclone) north and south of the center of circulation. Some of the cloud tops were are cold as -63 degrees Fahrenheit.

Fiona is intensifying as it approaches the Northern Leeward Islands today, so there are watches and warnings in place. A Tropical Storm Warning is in effect for St. Martin and St. Barthelemy. A Tropical Storm Watch is in effect for Antigua, Barbuda, Montserrat, St. Kitts, Nevis, and Anguilla and St. Maarten, Saba, and St. Eustatius.

At 8 a.m. EDT on September 1, Fiona's were near 60 mph. It was about 70 miles northeast of Barbuda, near 18.2 North and 60.9 West. It was moving west-northwest near 15 mph with a minimum central pressure of 998 millibars.

The National Hurricane Center noted that conditions could spread over portions of the Northern Leeward Islands later this morning and afternoon, and rainfall accumulations of 1 to 3 inches with isolated maximum amounts of 5 inches can be expected over portions of the Northern Leeward Islands.

Explore further: Researchers crack the ice to study the Arctic marine food web

add to favorites email to friend print save as pdf

Related Stories

Tropical Storm Oli kicking up waves in south Pacific

Feb 02, 2010

Tropical Storm Oli is headed between the islands of Bora Bora and Raratonga in the South Pacific, while maintaining its intensity as a tropical storm. Infrared satellite data from NASA's Aqua satellite reveals ...

Recommended for you

Geologists discover ancient buried canyon in South Tibet

4 hours ago

A team of researchers from Caltech and the China Earthquake Administration has discovered an ancient, deep canyon buried along the Yarlung Tsangpo River in south Tibet, north of the eastern end of the Himalayas. ...

User comments : 0

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

Click here to reset your password.
Sign in to get notified via email when new comments are made.