NASA satellite data shows Joaquin becoming a post-Tropical Cyclone
Infrared data from NASA's Aqua satellite showed Hurricane Joaquin weakening over cooler waters and transitioning into a post-tropical cyclone.An infrared image of Hurricane Joaquin was taken from the AIRS (Atmospheric Infrared Sounder) instrument aboard NASA's Aqua satellite on Oct. 7 at 15:41 UTC (11:41 a.m. EDT). The infrared data, which shows temperature, showed the highest, coldest clouds and the bulk of cold clouds were being pushed from the center to northeast of the center by westerly winds. Cloud top temperatures had also warmed since the previous day indicating weaker storms and less uplift in the air. AIRS infrared data also showed the sea surface temperatures were colder than the 80F (26.6C) required to help a tropical cyclone maintain intensity.