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).
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.
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