Hurricane Fiona , Expected to Continue Strengthening , After Devastating Puerto Rico.<br />On September 20, Hurricane Fiona threatens <br />more deadly flooding as it collides <br />with the Turks and Caicos islands. .<br />On September 20, Hurricane Fiona threatens <br />more deadly flooding as it collides <br />with the Turks and Caicos islands. .<br />CNN reports that the powerful storm has already devastated Puerto Rico, leaving the vast majority <br />of its 3.1 million residents without power.<br />CNN reports that the powerful storm has already devastated Puerto Rico, leaving the vast majority <br />of its 3.1 million residents without power.<br />In the Dominican Republic, <br />over a million people were <br />left without running water.<br />According to the country's emergency management <br />director of operations, nearly 800 people <br />were rescued by emergency workers.<br />Following the storm, at least 519 people were <br />taking refuge in the country's 29 shelters.<br />Early on September 20, Fiona strengthened<br />to a major Category 3 hurricane with <br />sustained winds over 111 miles per hour.<br />The Miami-based National Hurricane Center said that "life-threatening flooding" was possible through the afternoon in the Turks and Caicos islands.<br />According to officials, at least four people <br />have already died as a result of Fiona.<br />Late last week, one person was killed in the French territory <br />of Guadeloupe, two more people were killed in Puerto Rico <br />and another person died in the Dominican Republic.<br />CNN reports that this is the first <br />Category 3 or higher hurricane of this <br />year's Atlantic hurricane season.<br />Forecasters have predicted that Fiona could strengthen<br /> to a Category 4 storm with sustained winds of 130 <br />to 156 miles per hour by early September 21