Isaac Gains Strength, Threatens Haiti

Tropical Storm Isaac still has the potential to foul up Republicans' convention plans in Florida, but relief agencies are more worried about Haiti at the moment. Isaac is expected to be at hurricane strength when it rolls in tomorrow night—the first major storm to hit since the 2010 earthquake, reports CNN. Especially vulnerable are the more than 400,000 people still living in refugee camps around Port-au-Prince.

The storm should hit Tampa on Monday, though the Tampa Bay Times reports that the latest computer models show it tracking further west of Florida, which would lessen the impact. Forecasters will know more as they watch Isaac's path and strength over the next few days. Puerto Rico is already getting torrential rains, and Isaac will then hit the Dominican Republican and Haiti, before heading toward Cuba and the US, reports the AP. (More Tropical Storm Isaac stories.)