GOES-18 (GOES-West) SO2 RGB, Shortwave Infrared (3.9 µm) and Fire Power derived product images (above) showed the SO2 plume and thermal signature of an eruption of Kilauea that began at 4:44 AM HST or 1444 UTC on 07 June 2023. As of 1451 UTC (only 7 minutes after the onset of the... Read More

There are different RGBs available to monitor volcanic signatures within a cloud, and three common ones are shown above. The Dust RGB and the Ash RGB use identical channels/channel differences that are scaled differently. All three RGBs (here is the The SO2 RGB Quick Guide) include Band 11 information; Band 11 detects radiation... Read More

The recent Solar Eclipse that extended from the south Indian Ocean to the central north Pacific Ocean (Blog Post) traversed a region that is routinely monitored by different geostationary satellites — Himawari-9, GEOKOMPSAT-2A (GK2A) and FY-4A/FY-4B. Himawari-9 and GK2A have sub-satellite points on the Equator that are separated by only 12.5... Read More

JMA Himawari-9 Ash RGB images created using Geo2Grid (above) showed the volcanic plume —  which included a violent eruptive pulse that began at 0540 UTC on 07 April — from Bezymianny on the Kamchatka Peninsula of Russia during 06-07 April 2023. Signatures of ash (shades of pink to violet) were evident,... Read More