{"id":53467,"date":"2023-07-14T17:15:00","date_gmt":"2023-07-14T17:15:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=53467"},"modified":"2023-07-17T19:15:10","modified_gmt":"2023-07-17T19:15:10","slug":"eruption-of-mount-shishaldin-in-the-aleutian-islands","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/53467","title":{"rendered":"Eruption of Mount Shishaldin in the Aleutian Islands"},"content":{"rendered":"<p><div style=\"width: 1725px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/230714_goes18_so2RGB_ashRGB_Shishaldin_AK_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/ak_so2-20230714_120021.png\" width=\"1715\" height=\"830\"><\/a><p class=\"wp-caption-text\">GOES-18 SO2 RGB and Ash RGB images, 0900-1400 UTC [click to play animated GIF | <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/230714_goes18_so2RGB_ashRGB_Shishaldin_AK_anim.mp4\"><strong>MP4<\/strong><\/a>]<\/p><\/div>GOES-18 <em>(GOES-West)<\/em> <a href=\"https:\/\/rammb.cira.colostate.edu\/training\/visit\/quick_guides\/Quick_Guide_SO2_RGB.pdf\"><strong>SO2 RGB<\/strong><\/a> and <a href=\"https:\/\/rammb.cira.colostate.edu\/training\/visit\/quick_guides\/GOES_Ash_RGB.pdf\"><strong>Ash RGB<\/strong><\/a> images <em><strong>(above)<\/strong><\/em> showed the southward drift of a pair of volcanic clouds produced by an eruption of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mount_Shishaldin\"><strong>Mount Shishaldin<\/strong><\/a> that began at 0908 UTC on 14 July 2023. The initial higher-altitude volcanic cloud likely contained moderate concentrations of SO2 (denoted by brighter shades of yellow in the SO2 RGB images) &#8212; while the second lower-altitude volcanic cloud likely contained small concentrations of ash (shades of pink in the Ash RGB images).<\/p>\n<p>The difference between the 2 volcanic clouds was evident in a toggle between SO2 RGB and Ash RGB images at 1200 UTC <em><strong>(below)<\/strong><\/em>.<\/p>\n<p><div style=\"width: 1725px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/230714_1200utc_goes18_so2RGB_ashRGB_Shishaldin_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/230714_1200utc_goes18_so2RGB_ashRGB_Shishaldin_anim.gif\" width=\"1715\" height=\"830\"><\/a><p class=\"wp-caption-text\">GOES-18 SO2 RGB and Ash RGB images at 1200 UTC [click to enlarge]<\/p><\/div>In a toggle between Suomi-NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images valid at 1245 UTC <em><strong>(below)<\/strong><\/em>, the bright glow of hot lava at the volcano summit could be seen in the Day\/Night Band image &#8212; while the initial volcanic cloud had largely dissipated, and was no longer exhibiting cold infrared brightness temperatures.<\/p>\n<div style=\"width: 1725px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/230714_1245utc_suomiNPP_viirs_dayNightBand_infraredWindow_Shishaldin_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/07\/230714_1245utc_suomiNPP_viirs_dayNightBand_infraredWindow_Shishaldin_anim.gif\" width=\"1715\" height=\"830\"><\/a><p class=\"wp-caption-text\">Suomi-NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images valid at 1245 UTC [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>GOES-18 (GOES-West) SO2 RGB and Ash RGB images (above) showed the southward drift of a pair of volcanic clouds produced by an eruption of Mount Shishaldin that began at 0908 UTC on 14 July 2023. The initial higher-altitude volcanic cloud likely contained moderate concentrations of SO2 (denoted by brighter shades of yellow in the SO2 [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":53470,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[114,45,49,48,9],"tags":[],"class_list":["post-53467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-18","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs","category-volcanic-activity"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/53467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=53467"}],"version-history":[{"count":8,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/53467\/revisions"}],"predecessor-version":[{"id":53497,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/53467\/revisions\/53497"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/53470"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=53467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=53467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=53467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}