Typhoon Koinu in the Philippine Sea
![](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2023/10/AHIM09_VIS_IR_KOINU_02OCT2023_B313_2023275_002441_0002PANELS_FRAME00070.gif)
Target Sector (2.5-minute interval) JMA Himawari-9 AHI Visible and Infrared images (above) showed Typhoon Koina as it intensfied to a Category 3 storm by 0000 UTC on 02 October 2023 (SATCON). Cloud-top infrared brightness temperatures were as cold as -90C.Just prior to the start of the Himawari-9 animation, an image of RCM-3 Synthetic Aperture Radar (SAR) winds... Read More