{"id":62038,"date":"2024-12-10T23:59:00","date_gmt":"2024-12-10T23:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=62038"},"modified":"2024-12-13T01:19:25","modified_gmt":"2024-12-13T01:19:25","slug":"franklin-fire-near-malibu-california","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/62038","title":{"rendered":"Franklin Fire near Malibu, California"},"content":{"rendered":"

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1-minute GOES-18 Shortwave Infrared (3.9 \u00b5m) images, from 0631-2130 UTC on 10th December [click to play MP4 animation]<\/p><\/div>1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-18 (GOES-West)<\/em> Shortwave Infrared (3.9 \u00b5m<\/strong><\/a>) images (above)<\/strong><\/em> displayed a pronounced thermal signature associated with the Franklin Fire<\/strong><\/a>, which began burning just north-northwest Malibu, California around 0644 UTC<\/strong><\/a> on 10th December 2024<\/strong><\/a> (or 10:24 PM PST on 9th December). This wildfire was driven by strong Santa Ana winds<\/strong><\/a>, which helped it to increase rapidly in size and intensity — in fact, the Franklin Fire began to exhibit 3.9 \u00b5m brightness temperatures of 137.88\u00baC (the saturation temperature of GOES-18 ABI<\/strong><\/a> Band 7 detectors) beginning at 0855 UTC (below)<\/strong><\/em>, which persisted until 0947 UTC.<\/p>\n

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Sample of GOES-18 Shortwave Infrared (3.9 \u00b5m) brightness temperature NW of Malibu at 0855 UTC on 10th December [click to enlarge]<\/p><\/div>About 12 minutes after the Franklin Fire began to exhibit a thermal signature on GOES-18 Shortwave Infrared imagery, a RAWS<\/strong><\/a> site just east of the wildfire reported a wind gust of 52 mph at 0656 UTC (below)<\/strong><\/em>. About 2.5 hours later, a RAWS site just northwest of the fire reported a wind gust of 50 mph at 0931 UTC<\/strong><\/a>. In addition to the strong winds, relative humidity values at those nearby RAWS sites were generally 10% or less.<\/p>\n

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GOES-18 Shortwave Infrared image at 0656 UTC, with a sample of RAWS site observation data just east of the Franklin Fire [click to enlarge]<\/p><\/div>Since the Franklin Fire began and rapidly intensified during the nighttime hours, its thermal signature was also apparent in the Near-Infrared 1.61 \u00b5m<\/strong><\/a> and 2.24 \u00b5m<\/strong><\/a> spectral bands (below)<\/strong><\/em>.<\/p>\n

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1-minute GOES-18 Near-Infrared (1.61 \u00b5m and 2.24 \u00b5m, top and middle) and Shortwave Infrared (3.9 \u00b5m, bottom) images, from 0635-1430 UTC on 10th December [click to play animated GIF | MP4]<\/strong><\/a><\/p><\/div>1-minute GOES-18 True Color RGB images from the CSPP GeoSphere<\/strong><\/a> site (below)<\/strong><\/em> revealed several pyrocumulus jumps over the Franklin Fire, in addition to a dense smoke plume drifting offshore.<\/p>\n

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1-minute GOES-18 True Color RGB images, from 1530-2359 UTC on 10th December [click to play MP4 animation]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Shortwave Infrared (3.9 \u00b5m) images (above) displayed a pronounced thermal signature associated with the Franklin Fire, which began burning just north-northwest Malibu, California around 0644 UTC on 10th December 2024 (or 10:24 PM PST on 9th December). This wildfire was driven by strong Santa Ana winds, which helped it […]<\/p>\n","protected":false},"author":18,"featured_media":62042,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6,114,45],"tags":[],"class_list":["post-62038","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fire-detection","category-goes-18","category-redgreenblue-rgb-images"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/62038","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=62038"}],"version-history":[{"count":32,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/62038\/revisions"}],"predecessor-version":[{"id":62075,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/62038\/revisions\/62075"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/62042"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=62038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=62038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=62038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}