When did the tropical storm Lee come into being?

Tropical Storm Lee will cause major flooding along the Gulf Coast this weekend, including in New Orleans and south Mississippi.
    Tropical Storm Lee formed in the Gulf of Mexico on Friday afternoon. Since then, Lee has been moving very slowly northward while strengthening over the warm waters of the Gulf.
    According to weather forecasts, Lee’s winds could strengthen further and cause significant damage in some communities. Trees and power lines will topple over easily as the ground becomes water-logged. However, (8) rain is going to be the biggest impact of Lee with as much as 20 inches of rain being unleashed over the course of the weekend. This is due to the very slow movement of the tropical storm. A 26-foot sail boat broke lose from its mooring early on Saturday morning. Thunderstorms producing gusty winds have already, and will continue to down trees and cut power in some cities and towns along the Gulf Coast through the weekend.
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