Tropical Storm Isaac moves into Caribbean with 45-mph winds

Tropical Storm Isaac is now moving across the eastern Caribbean Sea.

  • Location: 50 miles southwest of Dominica
  • Maximum sustained winds: 45 mph
  • Movement: west at 20 mph
  • Next advisory: 2 p.m.
  • Where will Isaac go?

Interactive map

At 11 a.m., the center of Tropical Storm Isaac was located by NOAA Hurricane Hunter aircraft data and surface observations 50 miles southwest of Dominica.

Isaac is moving toward the west near 20 mph.  A westward track with a slower forward motion is forecast to continue for the next few days.

On the forecast track, Isaac should move farther away from Lesser Antilles today, and then move across the eastern and central Caribbean Sea through the weekend.


Tropical Storm Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts up to 8 to 10 inches over Dominica.

Rainfall amounts of 2 to 4 inches with isolated amounts up to 6 inches over elevated terrain are forecast across Martinique, Dominica, and Guadeloupe.

Rainfall totals of 2 to 4 inches with isolated amounts of 6 inches are forecast across southeastern Puerto Rico, while totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico and the U.S. Virgin Islands.

This rainfall may cause dangerous flash flooding.




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