Tropical Storm Isaias is threatening the Gulf Coast, with forecasters warning the system is expected to strengthen over the next 24 to 48 hours as it moves toward the coast.
ABC News chief meteorologist Ginger Zee is tracking the storm, which days ago strengthened into the season's first hurricane before being downgraded. The Gulf Coast is now bracing for heavy rain, strong winds and storm surge as the storm's path comes into focus.
Residents along the northern Gulf should monitor official forecasts and have emergency plans ready, forecasters say, as the storm could regain hurricane strength before landfall. The Atlantic hurricane season has been active this year, and officials are urging Gulf Coast communities not to wait for the final track to prepare.



