{"id":19802,"date":"2015-10-20T15:59:59","date_gmt":"2015-10-20T15:59:59","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=19802"},"modified":"2015-10-21T02:45:51","modified_gmt":"2015-10-21T02:45:51","slug":"hurricane-olaf","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/19802","title":{"rendered":"Hurricane Olaf"},"content":{"rendered":"<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/10\/151020_ADT_Hurricane_Olaf.GIF\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/10\/151020_ADT_Hurricane_Olaf.GIF\" alt=\"Advanced Dvorak Technique (ADT) intensity estimate plot for Hurricane Olaf\" width=\"480\" height=\"360\" \/><\/a><p class=\"wp-caption-text\">Advanced Dvorak Technique (ADT) intensity estimate plot for Hurricane Olaf<\/p><\/div>\n<p>A plot of the <a href=\"http:\/\/tropic.ssec.wisc.edu\/misc\/adt\/info.html\"><strong>Advanced Dvorak Technique<\/strong><\/a> (ADT) intensity estimate for Hurricane Olaf <em><strong>(above)<\/strong><\/em> showed that the storm went through a period of rapid intensification during the 19-20 October 2015 period, reaching <a href=\"http:\/\/www.nhc.noaa.gov\/aboutsshws.php\"><strong>Category 4<\/strong><\/a> strength. The National Hurricane Center noted that Olaf became the 6th major hurricane in the eastern North Pacific during the 2015 season, and that this was is the farthest south (9.9\u00ba N latitude) that a major hurricane had formed in that ocean basin since reliable records began in 1971 (discussion archive: <strong><a href=\"http:\/\/www.nhc.noaa.gov\/archive\/2015\/OLAF.shtml?\">NHC<\/a> <\/strong>| <a href=\"http:\/\/www.prh.noaa.gov\/cphc\/tcpages\/archive.php?stormid=EP192015\"><strong>CPHC<\/strong><\/a>).<\/p>\n<p>4-km resolution GOES-15 <em>(GOES-West)<\/em> 10.7 \u00b5m Infrared channel images during the period of rapid intensification <em><strong>(below)<\/strong><\/em> revealed that cloud-top IR brightness temperatures were quite cold <em>(in the -80\u00ba to -90\u00ba C range, violet colors)<\/em> early in the day on 19 October, but then warmed a bit into the -70\u00ba to -80\u00ba C range <em>(black to white shades)<\/em> on 20 October as the eye became more well-defined.<\/p>\n<p><div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/10\/151019-20_goes15_ir_Hurricane_Olaf_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"thumbnail\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/10\/960x1280_AGOES15_B4_OLAF_IR_19_2015292_200000.GIF\" alt=\"GOES-15 Infrared (10.7 \u00b5m) images [click to play animation]\" width=\"480\" height=\"360\" \/><\/a><p class=\"wp-caption-text\">GOES-15 Infrared (10.7 \u00b5m) images [click to play animation]<\/p><\/div>A 375-meter resolution Suomi NPP VIIRS Infrared (11.45 \u00b5m) image at 10:23 UTC on 20 October <em><strong>(below)<\/strong><\/em> hinted at the presence of mesovortices within the eye of Hurricane Olaf.<\/p>\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/10\/151020_1023utc_suomi_npp_viirs_ir_Hurricane_Olaf.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/10\/151020_1023utc_suomi_npp_viirs_ir_Hurricane_Olaf.png\" alt=\"Suomi NPP VIIRS Infrared (11.45 \u00b5m) image [click to enlarge]\" width=\"480\" height=\"332\" \/><\/a><p class=\"wp-caption-text\">Suomi NPP VIIRS Infrared (11.45 \u00b5m) image [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A plot of the Advanced Dvorak Technique (ADT) intensity estimate for Hurricane Olaf (above) showed that the storm went through a period of rapid intensification during the 19-20 October 2015 period, reaching Category 4 strength. The National Hurricane Center noted that Olaf became the 6th major hurricane in the eastern North Pacific during the 2015 [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":19806,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43,49,2,48],"tags":[],"class_list":["post-19802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-15","category-suomi_npp","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/19802","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=19802"}],"version-history":[{"count":9,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/19802\/revisions"}],"predecessor-version":[{"id":19812,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/19802\/revisions\/19812"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/19806"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=19802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=19802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=19802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}