Tropical Depression 13 forms; Hurricane Kirk strengthens WFLAStorm tracker: Hurricane Kirk is strengthening and forecast to grow larger, NHC says USA TODAYTropical Depression 13 forms in the Atlantic, may become hurricane this weekend: NHC FOX 35 OrlandoFlorida on long-range alert for upcoming Gulf tropical threat AccuWeatherTropical Depression 13 expected to soon become Leslie in Atlantic Fox Weather