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... Read More

McIDAS images of MTSAT-2 10.8 µm IR channel images (above; click image to play animation) showed the formation of a large and well-defined eye as Super Typhoon 17W (Sanba) intensified over the West Pacific Ocean on 13 September 2012.A plot of the CIMSS Advanced Dvorak... Read More

Tropical Storm / Hurricane Leslie moved very slowly over the western tropical Atlantic Ocean between 6 September and 7 September (see, for example, this graphics animation from the National Hurricane Center, and the storm track from the CIMSS Tropical Cyclones site below). Strong winds associated with the cyclonic circulation around a hurricane or tropical storm will... Read More

Hurricane Michael became the first Category 3 hurricane of the 2012 Atlantic Basin season on 06 September. GOES-13 0.63 µm visible channel images (above) and GOES-13 10.7 µm IR channel images (below) from the CIMSS Tropical Cyclones site showed that Michael displayed a well-defined eye.A... Read More