Long-lived Nadine becomes a tropical storm again
IR images from the CIMSS Tropical Cyclones site (above) show increased organization and convection associated with Tropical Storm Nadine on 23 September 2012. Nadine was declared “post-tropical” on 21 September, after having initially formed as a tropical depression on 11 September. Nadine eventually reached Category 1 hurricane intensity late in the day on 14 September as it recurved eastward over the central Atlantic Ocean (below).