Hurricane Franklin reaches Category 4 intensity
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/08/230828_0612utc_noaa20_viirs_dayNightBand_infrared_Franklin_anim.gif)
NOAA-20 VIIRS Day/Night Band (0.7 µm) and Infrared Window (11.45 µm) images valid at 0612 UTC [click to enlarge]
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/08/fr_vis-20230828_130117.png)
GOES-16 “Red” Visible (0.64 µm) images, with/without an overlay of GLM Flash Extent Density [click to play animated GIF | MP4]
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/08/fr_ir-20230828_130117.png)
GOES-16 “Clean” Infrared Window (10.3 µm) images [click to play animated GIF | MP4]