![\"\"](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/06\/230607_goes18_so2RGB_shortwaveInfrared_Kilauea_HI_anim.gif\")
<\/a>GOES-18 SO2 RGB, Shortwave Infrared (3.9 \u00b5m) and Fire Power derived product images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>GOES-18 (GOES-West)<\/em> SO2 RGB<\/strong><\/a>, Shortwave Infrared (3.9 \u00b5m<\/strong><\/a>) and Fire Power derived product images (above)<\/strong><\/em> showed the SO2<\/sub> 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 eruption), the 3.9 \u00b5m infrared brightness temperature reached 137.88\u00baC — which is the saturation temperature of the GOES-18 ABI and 7 detectors — and Fire Power values peaked around 2100 MW (cursor sample<\/strong><\/a>). The Fire Power derived product is a component of the GOES Fire Detection and Characterization Algorithm (FDCA<\/strong><\/a>).<\/p>\n The thermal signature was also evident in Nighttime Microphysics RGB<\/strong><\/a> imagery from the CSPP GeoSphere<\/strong><\/a> site — and after sunrise the hazy SO2<\/sub>-rich volcanic plume could be seen in True Color RGB images, drifting southwestward away from Kilauea and the Big Island of Hawai`i.<\/p>\n GOES-18 Nighttime Microphysics RGB and True Color RGB images [click to play MP4 animation]<\/p><\/div>GOES-18 Ash RGB<\/strong><\/a> images created using Geo2Grid<\/strong><\/a> (below)<\/strong> showed the SO2<\/sub>-rich volcanic cloud (shades of cyan) as it drifted southwest. According to the Hawaiian Volcano Observatory<\/strong><\/a>, a sulfur dioxide (SO2<\/sub>) emission rate of approximately 65,000 tonnes per day was measured between approximately 8 and 9 a.m. local time (1800-1900 UTC).<\/p>\n<\/a>