{"id":64647,"date":"2025-05-07T14:29:00","date_gmt":"2025-05-07T14:29:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=64647"},"modified":"2025-05-07T20:06:09","modified_gmt":"2025-05-07T20:06:09","slug":"episode-20-of-the-latest-kilauea-eruption-on-the-big-island-of-hawaii","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/64647","title":{"rendered":"Episode 20 of the latest Kilauea eruption on the Big Island of Hawai&#8217;i"},"content":{"rendered":"<p><div style=\"width: 3002px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_g18_swir_fireMask_Kilauea.mp4\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_0426z_g18_swir_fireMask_HI.png\" width=\"2992\" height=\"1662\" \/><\/a><p class=\"wp-caption-text\">GOES-18 Shortwave Infrared (3.9 \u00b5m, left) and Fire Mask derived product (right), from 0201-1401 UTC on 07 May [click to play MP4 animation]<\/p><\/div>5-minute CONUS Sector GOES-18 <em>(GOES-West)<\/em> Shortwave Infrared (3.9 \u00b5m) and Fire Mask derived product images <em><strong>(above)<\/strong><\/em> displayed a pronounced thermal signature associated with Episode 20 of the ongoing eruption in the Halema&#8217;uma&#8217;u crater (located within the Kilauea summit caldera) on the Big Island of Hawai&#8217;i, which began around 0328 UTC on 07 May 2025. Shortwave Infrared 3.9 \u00b5m brightness temperatures exhibited values of 137.88\u00baC &#8212; the saturation temperature of GOES-18 <a href=\"https:\/\/www.goes-r.gov\/spacesegment\/abi.html\"><strong>ABI<\/strong><\/a> Band 7 detectors &#8212; for several hours, beginning at <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_0336utc_goes18_shortwaveInfrared_saturation_Kilauea.png\"><strong>0336 UTC<\/strong><\/a>. This prolonged multi-episode Kilauea eruption began on <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/62231\"><strong>23 December 2024<\/strong><\/a>.<\/p>\n<p>The sustained period of lava fountaining during this episode ended around 0758 UTC &#8212; but a GOES-18 thermal signature of prolonged surface lava flow was still apparent several hours later at 1156 UTC, and the bright nighttime glow of this lava flow could be seen in NOAA-21 VIIRS Day\/Night Band imagery <em><strong>(below)<\/strong><\/em>.<\/p>\n<p><div style=\"width: 3002px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_1156utc_g18_swir_n21_dnb_HI.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_1156utc_g18_swir_n21_dnb_HI.png\" width=\"2992\" height=\"1662\" \/><\/a><p class=\"wp-caption-text\">GOES-18 Shortwave Infrared (3.9 \u00b5m, left) and NOAA-21 VIIRS Day\/Night Band (0.7 \u00b5m, right) images valid at 1156 UTC on 07 May [click to enlarge]<\/p><\/div>GOES-18 <a href=\"https:\/\/rammb2.cira.colostate.edu\/wp-content\/uploads\/2020\/01\/Quick_Guide_SO2_RGB-1.pdf\"><strong>SO<sub>2<\/sub> RGB<\/strong><\/a> images from the <a href=\"https:\/\/realearth.ssec.wisc.edu\"><strong>RealEarth<\/strong><\/a> site <em><strong>(below)<\/strong><\/em> indicated that a low-altitude plume of SO<sub>2<\/sub> (pale shades of green) was drifting southwest from Kilauea &#8212; the cluster of dark blue pixels denoted the thermal anomaly associated with the eruption site.<\/p>\n<div style=\"width: 3002px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_g18_so2RGB_Kilauea.mp4\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/05\/250507_0631z_g18_so2rgb_HI.png\" width=\"2992\" height=\"1856\" \/><\/a><p class=\"wp-caption-text\">GOES-18 SO<sub>2<\/sub> RGB images, from 0321-0901 UTC on 07 May [click to play MP4 animation]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>5-minute CONUS Sector GOES-18 (GOES-West) Shortwave Infrared (3.9 \u00b5m) and Fire Mask derived product images (above) displayed a pronounced thermal signature associated with Episode 20 of the ongoing eruption in the Halema&#8217;uma&#8217;u crater (located within the Kilauea summit caldera) on the Big Island of Hawai&#8217;i, which began around 0328 UTC on 07 May 2025. Shortwave [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":64660,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[114,131,53,45,48,9],"tags":[],"class_list":["post-64647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-18","category-noaa-21","category-real-earth","category-redgreenblue-rgb-images","category-viirs","category-volcanic-activity"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/64647","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=64647"}],"version-history":[{"count":10,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/64647\/revisions"}],"predecessor-version":[{"id":64662,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/64647\/revisions\/64662"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/64660"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=64647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=64647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=64647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}