Cold temperatures in Alaska
![](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2017/01/170119_1518Z_AVHRR_IR_AK_PABT_T-1.gif)
A NOAA-18 AVHRR Infrared Window (10.8 µm) image (above) showed the signature of cold air (violet colors) settling into river valleys and other low-elevation terrain areas across the cloud-free interior of Alaska at 1916 UTC (10:16 am local time) on 18 January 2017. Note that there was a layer of... Read More