GOES-17 imagery shown here is preliminary and non-operational. The default scanning strategy for the Advanced Baseline Imager on GOES-16 is Mode 3, also known as Flex Mode.  In Mode 3, there are 2 Mesoscale Sectors scanned every minute, a CONUS sector scanned every 5 minutes, and a Full Disk... Read More

Suomi NPP VIIRS Visible (0.64 µm) and Infrared Window (11.45 µm) images (above) captured an unusually late thunderstorm that produced small hail at Anchorage PANC (surface observations) on 24 September 2018. The coldest cloud-top infrared brightness temperature was -53.8ºC, which was colder than the -46.3ºC tropopause temperature on the 00 UTC Anchorage sounding. This... Read More