Tropical Systems can occasionally be accompanied by Predecessor Rainfall Events (PREs). This band of heavy rainfall is not associated with the spiral bands of the tropical system, but rather with an interaction with a mid-latitude jet that exists Poleward of the tropical feature. Some notable PRE-producing tropical systems in... Read More
Vertical wind shear is the change of wind speed and/or direction with height. For tropical cyclones, wind shear is something that must be overcome if strengthening is to occur. For (minimal) tropical storm Danny, strong wind shear has persisted in keeping convection far from the storm center. When the storm... Read More
Bill became the first Atlantic hurricane of the 2009  season on 17 August 2009. GOES-12 IR images from the CIMSS Tropical Cyclones site (above) displayed a canopy of very cold cloud tops around the center of... Read More
GOES-12 IR images from the CIMSS Tropical Cyclones site (above) showed that Tropical Storm Bill began to exhibit a well-defined curved banding structure during the early daytime hours on 16 August 200. In addition, the IR... Read More
