{"id":63669,"date":"2025-03-16T23:59:00","date_gmt":"2025-03-16T23:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=63669"},"modified":"2025-03-21T17:09:34","modified_gmt":"2025-03-21T17:09:34","slug":"resuspended-ash-from-the-1912-novarupta-katmai-eruption-2","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/63669","title":{"rendered":"Resuspended ash from the 1912 Novarupta-Katmai eruption"},"content":{"rendered":"<p><div style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/03\/250316_goes18_dustRGB_trueColorRGB_Katmai_AK_resuspended_ash_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/03\/GOES-18_ABI_RadF_true_color_night_dust_2025075_202022Z.png\" width=\"1200\" height=\"1200\" \/><\/a><p class=\"wp-caption-text\">GOES-18 nighttime Dust RGB and daytime True Color RGB images, from 0900 UTC on 16 March to 0000 UTC on 17 March [click to play animated GIF | <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/03\/250316_goes18_dustRGB_trueColorRGB_Katmai_AK_resuspended_ash_anim.mp4\"><strong>MP4<\/strong><\/a>]<\/p><\/div>10-minute Full Disk scan GOES-18 <em>(GOES-West)<\/em> nighttime <a href=\"https:\/\/rammb2.cira.colostate.edu\/wp-content\/uploads\/2020\/01\/Dust_RGB_Quick_Guide-1.pdf\"><strong>Dust RGB<\/strong><\/a> and daytime True Color RGB images created using <a href=\"https:\/\/www.ssec.wisc.edu\/software\/geo2grid\/\"><strong>Geo2Grid<\/strong><\/a> <em><strong>(above)<\/strong><\/em> showed a plume of resuspended ash (shades of pink in Dust RGB, hazy shades of tan in True Color RGB) from the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Novarupta\"><strong>1912 Novarupta-Katmai<\/strong><\/a> eruption in Alaska, which was being transported offshore across the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Shelikof_Strait\"><strong>Shelikof Strait<\/strong><\/a> toward Kodiak Island on 16 March 2025. Surface volcanic ash within the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Valley_of_Ten_Thousand_Smokes\"><strong>Valley Of Ten Thousand Smokes<\/strong><\/a> was being lofted by strong northwesterly winds (on the back side of a slowly-deepening <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/03\/250316_AK_surface_analyses_anim.gif\"><strong>Gale Force Low<\/strong><\/a> located near the southcentral Alaska coast) that were being channeled through the valley.<\/p>\n<p>According to this <a href=\"https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-AVO-2025-03-16T14%3A39%3A46%2B00%3A00\"><strong>USGS Volcano Notice<\/strong><\/a>, the National Weather Service issued a SIGMET advising that the maximum height of this resuspended ash was 6000 ft.<\/p>\n<p>Other similar resuspended ash events have been documented <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?s=resuspended+ash\"><strong>here<\/strong><\/a> on this blog.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>10-minute Full Disk scan GOES-18 (GOES-West) nighttime Dust RGB and daytime True Color RGB images created using Geo2Grid (above) showed a plume of resuspended ash (shades of pink in Dust RGB, hazy shades of tan in True Color RGB) from the 1912 Novarupta-Katmai eruption in Alaska, which was being transported offshore across the Shelikof Strait [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":63670,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[132,114,9],"tags":[],"class_list":["post-63669","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geo2grid","category-goes-18","category-volcanic-activity"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63669","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=63669"}],"version-history":[{"count":21,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63669\/revisions"}],"predecessor-version":[{"id":66578,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63669\/revisions\/66578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/63670"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=63669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=63669"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=63669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}