NASA sees Tropical Storm Isaac and Tropical Depression 10 racing in Atlantic

The Atmospheric Infrared Sounder (AIRS)
instrument onboard NASA's Aqua satellite
captured an infrared image of Tropical Storm
Isaac on Aug. 22 at 2:05 a.m. EDT, as it was
bringing heavy rainfall to the Lesser Antilles.
Strong thunderstorms appeared in a band of
thunderstorms in Isaac's western quadrant that
had cloud top temperatures as cold as -63F
(-52C) (in purple). Credit: NASA JPL, Ed Olsen

NASA sees Tropical Storm Isaac and Tropical Depression 10 racing in Atlantic
Aug 22, 2012 | Phys.org

There are now two active tropical cyclones in the Atlantic and NASA is generating satellite imagery to monitor their march westward. Tropical Storm Issac is already bringing rainfall to the Lesser Antilles today, Aug. 22, Tropical Depression 10 formed in the eastern Atlantic, and another low fizzled in the western Gulf of Mexico.

Tropical Storm Isaac formed late on Aug. 21 from Tropical Depression 9 and immediately caused warnings and watches. Tropical Depression 10 formed during the morning hours on Aug. 22 in the central Atlantic, east of Isaac and appears to be following the tropical storm on NOAA's GOES-13 satellite imagery. NOAA's GOES-13 satellite captured an image of Tropical Storm Isaac over the Lesser Antilles, and newborn Tropical Depression 10 trailing behind on Aug. 22 at 1445 UTC (10:45 a.m. EDT). The image was created by the NASA GOES Project at the NASA Goddard Space Flight Center in Greenbelt, Md. Both storms are showing good circulation.

 The Atmospheric Infrared Sounder (AIRS) instrument onboard NASA's Aqua satellite captured an infrared image of Tropical Storm Isaac on Aug. 22 at 2:05 a.m. EDT, as it was bringing heavy rainfall to the Lesser Antilles. Strong thunderstorms appeared in a band of thunderstorms in Isaac's western quadrant that had cloud top temperatures as cold as -63F (-52C).

This visible image captured by NOAA's GOES-13
satellite on Aug. 22 at 1445 UTC shows Tropical Storm
Isaac over the Lesser Antilles, and newborn Tropical
Depression 10 trailing behind in the central Atlantic.
Credit: NASA/NOAA GOES Project

Watches and Warnings in Effect 

The National Hurricane Center has posted Warnings and Watches for Tropical Storm Issac. A Tropical Storm Warning is in effect for Martinique, Dominica, Guadeloupe and the surrounding islands, and St. Martin, St. Kitts, Nevis, Antigua, Barbuda, Montserrat, and Anguilla, Saba, St. Eustatius, and St. Maarten, British Virgin Islands, Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands.

There are also hurricane and tropical storm watches in effect. A Hurricane Watch is in effect for Puerto Rico, Vieques, Culebra, and the U.S. and British Virgin Islands; the south coast of the Dominican Republic from Isla Saona westward to the Haiti-Domenican Republic southern border. A Tropical Storm Watch is in effect for the north coast of the Dominican Republic from the Haiti-Dominican Republic northern border eastward to north of Isla Saona.