After unleashing heavy rains in Puerto Rico, tropical storm Isaac is inching closer to the Dominican Republic and Haiti Friday, even as the organizers of the Republican National Convention in Tampa, Florida, make alternate arrangements in lieu of the National Hurricane Center's weather forecast that Isaac is likely to pass near the state's Gulf Coast Monday.

Though the Republican convention organizers have not ruled out postponing or relocating the meeting if the storm arrives at Tampa, "convention does not appear to be the biggest concern," Craig Fugate, director, Federal Emergency Management Agency, told Reuters.

Apparently, the storm caused heavy rains in eastern and southern Puerto Rico, whipping up waves as high as 10 feet (3 meters) in the Caribbean Thursday, USA Today reported.

Earlier, the National Hurricane Center issued warnings for the Dominican Republic and Haiti. After striking the islands, Isaac might weaken before returning to water and then striking Florida on east or the west, the National Hurricane Center said.

Here's a quick look at the havoc caused by heavy rains in Trinidad and Tobago due to the tropical storm that is threatening to strengthen into a full-fledged hurricane before striking at Florida.

Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
Residents of Upper La Horquette Road put on shoes after crossing a stream where a road bridge once stood before it was washed away by floods caused by heavy showers earlier this month in Glencoe, west of the capital Port-of-Spain, in Trinidad and Tobago, August 23, 2012. Reuters
Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
Pensioner Theophile Jpseh looks at the broken fence and damaged road outside his home on Upper Mount Pleasant Road in Carenage, west of the capital Port of Spain in Trinidad and Tobago on Aug. 23. The damage was caused by Tropical Storm Isaac. Reuters
Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
A resident of Mount Pleasant Road, Carenage, west of the capital Port of Spain, walks past a broken fence along a road damaged by heavy rainfall due to the passing of Tropical Storm Isaac in Trinidad and Tobago, August 23, 2012. Reuters
Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
Rosemary Beharry surveys the damage caused by a mudslide in the kitchen of her home at Upper Neckles Drive, Carenage, west of the capital Port-of-Spain, following heavy showers caused by the passing of Tropical Storm Isaac in Trinidad and Tobago, August 23, 2012. Reuters
Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
Furniture and other belongings are stacked outside as a resident prepares to move out of a house damaged by a mudslide caused by the passing of Tropical Storm Isaac at Upper Neckles Drive, Carenage in Trinidad and Tobago, August 23, 2012. Reuters
Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
Roy Beharry shows the destruction caused by a mudslide at his home at Upper Neckles Drive, Carenage, west of the capital Port-of-Spain following heavy rainfall caused by the passing of Tropical Storm Isaac in Trinidad and Tobago, August 23, 2012. Reuters
Tropical Storm Isaac Gather Pace As Hurricane Towards Haiti
Firemen remove a tree that fell in the yard of a house at Farfan Street, Diego Martin, west of the capital Port-of-Spain, during heavy showers and high winds caused by the passing of Tropical Storm Isaac in Trinidad and Tobago, August 23, 2012. Reuters
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