{"id":48321,"date":"2022-10-10T23:59:00","date_gmt":"2022-10-10T23:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=48321"},"modified":"2022-10-19T01:05:43","modified_gmt":"2022-10-19T01:05:43","slug":"pyrocumulonimbus-clouds-in-canadas-northwest-territories","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/48321","title":{"rendered":"Pyrocumulonimbus clouds in Canada’s Northwest Territories"},"content":{"rendered":"

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GOES-17 \u201cRed\u201d Visible (0.64 \u00b5m, top left), Shortwave Infrared (3.9 \u00b5m, top right), \u201cClean\u201d Infrared Window (10.3 \u00b5m, bottom left) and Fire Temperature RGB (bottom right) images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>GOES-17 (GOES-West)<\/em>\u00a0\u201cRed\u201d Visible (0.64 \u00b5m<\/strong><\/a>), Shortwave Infrared (3.9 \u00b5m<\/strong><\/a>), \u201cClean\u201d Infrared Window (10.35 \u00b5m<\/strong><\/a>) and\u00a0Fire Temperature RGB<\/strong><\/a>\u00a0images\u00a0(above)<\/strong><\/em> showed a wildfire just southeast of Fort Simpson<\/strong><\/a> in Canada\u2019s Northwest Territories (just north of the border with British Columbia), which produced a pair of pyrocumulonimbus<\/strong><\/a> (pyroCb) clouds late in the day on 10 October 2022. Surface winds gusting as high as 28 knots (32 mph) at Fort Simpson — in the wake of a cold frontal passage (surface analyses<\/strong><\/a>) — likely played a role in helping to intensify the fire enough to produce the 2 pyroCb clouds. The hottest 3.9 \u00b5m infrared brightness temperature sampled in the 10-minute imagery was 121.19\u00baC at 2000 UTC — with the pyroCb clouds developing around 2200 and 2330 UTC.<\/p>\n

A toggle between Suomi-NPP VIIRS Visible (0.64 \u00b5m) images at 1903 and 2042 UTC (below)<\/strong><\/em> displayed the large smoke plume that drifted southeastward as far as northern Saskatchewan. About 200 miles southeast of the wildfire source region, this smoke reduced the surface visibility to 3 miles or less at Hay River<\/strong><\/a> NT around 21 UTC.<\/p>\n

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Suomi-NPP VIIRS Visible (0.64 \u00b5m) images at 1903 and 2042 UTC [click to enlarge]<\/p><\/div>During the subsequent nighttime hours, a toggle between Suomi-NPP VIIRS Shortwave Infrared (3.74 \u00b5m) and Day\/Night Band (0.7 \u00b5m) images at 1211 UTC (below)<\/strong><\/em> revealed the thermal signatures and visible glow of individual active fires around the periphery of the fire complex.<\/p>\n

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Suomi-NPP VIIRS Shortwave Infrared (3.74 \u00b5m) and Day\/Night Band (0.7 \u00b5m) images at 1211 UTC [click to enlarge]<\/p><\/div>GOES-17 and GOES-16 (GOES-East)<\/em> True Color RGB images from the CSPP GeoSphere<\/strong><\/a> site (below)<\/strong><\/em> showed the hazy smoke plume as it drifted southeastward — along with the pyrocumulus and pyroCb clouds that developed over the wind-driven fire complex.<\/p>\n

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GOES-17 True Color RGB images [click to play MP4 animation]<\/p><\/div>
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GOES-16 True Color RGB images [click to play MP4 animation]<\/p><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"

GOES-17 (GOES-West)\u00a0\u201cRed\u201d Visible (0.64 \u00b5m), Shortwave Infrared (3.9 \u00b5m), \u201cClean\u201d Infrared Window (10.35 \u00b5m) and\u00a0Fire Temperature RGB\u00a0images\u00a0(above) showed a wildfire just southeast of Fort Simpson in Canada\u2019s Northwest Territories (just north of the border with British Columbia), which produced a pair of pyrocumulonimbus (pyroCb) clouds late in the day on 10 October 2022. Surface winds […]<\/p>\n","protected":false},"author":18,"featured_media":48325,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,6,74,80,45,49,48],"tags":[],"class_list":["post-48321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-quality","category-fire-detection","category-goes-16","category-goes-17","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/48321","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=48321"}],"version-history":[{"count":19,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/48321\/revisions"}],"predecessor-version":[{"id":48415,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/48321\/revisions\/48415"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/48325"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=48321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=48321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=48321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}