Tropical Storm Erin's path puts some homeowners at heightened risk, as the storm starts building into a hurricane tracked by meteorologists.

Tropical Storm Erin is on the cusp of strengthening into a hurricane, which it is expected to become later this Friday, as it bears down on the northern Caribbean islands.

Over the weekend, Erin is expected to rapidly intensify all the way to a Category 3 hurricane. By Monday, as the storm steers away from the Caribbean and toward Bermuda, it's now forecast to hit Category 4 with 130 mph sustained winds. Some long-term computer models suggest it could get even stronger and hit Category 5 in the open ocean.