{"id":134,"date":"2006-09-21T19:50:50","date_gmt":"2006-09-21T19:50:50","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/2006\/09\/21\/an-occluding-cyclone-at-1-minute-intervals\/"},"modified":"2006-09-26T19:37:07","modified_gmt":"2006-09-26T19:37:07","slug":"an-occluding-cyclone-at-1-minute-intervals","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/134","title":{"rendered":"An occluding cyclone (at 1 minute intervals)"},"content":{"rendered":"<p><a target=\"_blank\" title=\"GOES-10 water vapor image\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060921_g10_wv_160.GIF\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"360\" align=\"middle\" title=\"GOES-10 water vapor image\" id=\"image131\" alt=\"GOES-10 water vapor image\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060921_g10_wv_160.GIF\" \/><\/a><\/p>\n<p>A deepening mid-latitude cyclone (<a title=\"12 UTC surface analysis\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/usfntsfc12wbg.gif\"><strong>located over southeastern Colorado \/ southwestern Kansas at 12 UTC<\/strong><\/a>) began to transition from the mature stage to the occluded stage during the morning hours on <a title=\"21 September daily weather map\" target=\"_blank\" href=\"http:\/\/www.hpc.ncep.noaa.gov\/dailywxmap\/index_20060921.html\"><strong>21 September<\/strong><\/a>. The tell-tale occluding cyclone  signature (consisting of a wrapping &#8220;dry slot swirl&#8221;) was depicted on the 8-km resolution GOES-10 6.7 micrometer &#8220;water vapor channel&#8221; imagery <em><strong>(above)<\/strong><\/em> &#8212; a 200-image <a title=\"GOES-10 water vapor animation\" target=\"_blank\" href=\"http:\/\/cimss.ssec.wisc.edu\/goes\/misc\/blog\/060921_g10_wv.mov\"><strong>QuickTime animation<\/strong><\/a> shows the evolution of the occlusion process at 1-minute intervals, since the GOES-10 satellite was still in Super Rapid Scan Operations <strong>(SRSO)<\/strong> mode.  By 15 UTC, HPC analyzed the feature  as an <a target=\"_blank\" title=\"15 UTC surface analysis\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/usfntsfc15wbg.gif\"><strong>occluded low<\/strong><\/a>; later that afternoon <a title=\"SPC storm reports\" target=\"_blank\" href=\"http:\/\/www.spc.noaa.gov\/climo\/reports\/060921_rpts.html\"><strong>several tornadoes were reported in northcentral Kansas<\/strong><\/a> as the low moved over that region.<\/p>\n<p>.<br \/>\nAdditional structure is revealed on the <a title=\"AWIPS MODIS water vapor image\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060921_modis_wv.jpg\"><strong>1-km resolution MODIS water vapor imagery<\/strong><\/a> at 17 UTC. Also, strong winds were causing a plume of blowing dust along the advancing cold frontal boundary &#8212; this dust plume exhibits a signal (yellow to orange enhancement) on the MODIS 11-12 micrometer IR difference product <em><strong>(below)<\/strong><\/em>. Note the observation of blowing dust at Lubbock, Texas (station identifier <strong>LBB<\/strong> in the lower left corner of the image), where westerly surface winds were 38 mph (gusting to 47 mph); the blowing dust was reducing visibility to 3 miles at that particular time.<br \/>\n<a title=\"MODIS IR difference product\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060921_modis_ch31-32_a.GIF\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"363\" align=\"middle\" alt=\"MODIS IR difference product\" id=\"image139\" title=\"MODIS IR difference product\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060921_modis_ch31-32_a.GIF\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A deepening mid-latitude cyclone (located over southeastern Colorado \/ southwestern Kansas at 12 UTC) began to transition from the mature stage to the occluded stage during the morning hours on 21 September. The tell-tale occluding cyclone signature (consisting of a wrapping &#8220;dry slot swirl&#8221;) was depicted on the 8-km resolution GOES-10 6.7 micrometer &#8220;water vapor [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,10,14],"tags":[],"class_list":["post-134","post","type-post","status-publish","format-standard","hentry","category-air-quality","category-general-interpretation","category-goes-10"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/134","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=134"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/134\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}