{"id":30463,"date":"2018-10-26T23:59:05","date_gmt":"2018-10-26T23:59:05","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=30463"},"modified":"2018-10-27T22:50:45","modified_gmt":"2018-10-27T22:50:45","slug":"super-typhoon-yutu-re-intensifies-to-category-5","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/30463","title":{"rendered":"Super Typhoon Yutu re-intensifies to Category 5"},"content":{"rendered":"

\"Himawari-8<\/a>

Himawari-8 “Clean” Infrared Window (10.4 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>After making landfall in the Northern Mariana Islands on 24 October<\/strong><\/a>, Super Typhoon Yutu underwent eyewall replacement cycles that brought about a drop to Category 4<\/strong><\/a> intensity on 25 October. However, during the day on 26 October 2018 the storm again re-intensified to Category 5 (ADT<\/strong><\/a> | SATCON<\/strong><\/a>). Himawari-8 “Clean” Infrared Window (10.4 \u00b5m) images (above)<\/strong><\/em> showed a fascinating variety of storm-top features: (1) outward-propagating gravity waves, (2) a quasi-stationary (in a storm-relative sense, with respect to the moving storm center) curved “notch”<\/strong><\/a>\u00a0 — resembling a hydraulic jump — within the eastern semicircle, and (3) periodic bursts of warm\/cold couplets<\/strong><\/a> (black\/violet enhancement)<\/em>\u00a0 — resembling “hot tower” impulses — located well northeast of the storm center (forming around 19-20\u00ba N\/137\u00ba\u00a0 W)<\/em> that propagated quickly northwestward. In addition, cloud-top infrared brightness temperatures of -90\u00baC and colder (yellow pixels embedded within darker purple shades)<\/em> were seen southern eyewall during the 18-19 UTC period (1834 UTC image<\/strong><\/a>).<\/p>\n

A comparison of Himawari-8 “Red” Visible (0.64 \u00b5m) and Infrared Window images during the few hours after sunrise (below)<\/strong><\/em> showed an eye that was partially cloud-filled with low-level mesovortices.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 “Red” Visible (0.64 \u00b5m, left)<\/em> and “Clean” Infrared Window (10.4 \u00b5m, right)<\/em> images [click to play MP4 animation]<\/p><\/div>An animation of Himawari-8 Visible images from 2302 UTC on 26 October to 0632 UTC on 27 October (below)<\/strong><\/em> provides a more detailed view of the mesovortices and some of the storm-top gravity waves. As was seen on Infrared imagery, a train of quasi-stationary concentric waves formed along the “notch” feature, becoming especially pronounced around 0532 UTC<\/strong><\/a>.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 “Red” Visible (0.64 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>A comparison of DMSP-17 SSMIS Microwave (85 GHz) and Himawari-8 Infrared Window (10.4 \u00b5m) images from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em> showed Yutu around 2130 UTC.<\/p>\n

\"DMSP-17<\/a>

DMSP-17 SSMIS Microwave (85 GHz)<\/em> and Himawari-8 Infrared Window (10.4 \u00b5m)<\/em> images [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

After making landfall in the Northern Mariana Islands on 24 October, Super Typhoon Yutu underwent eyewall replacement cycles that brought about a drop to Category 4 intensity on 25 October. However, during the day on 26 October 2018 the storm again re-intensified to Category 5 (ADT | SATCON). Himawari-8 “Clean” Infrared Window (10.4 \u00b5m) images […]<\/p>\n","protected":false},"author":18,"featured_media":30465,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[56,62,79,2],"tags":[],"class_list":["post-30463","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dmsp","category-himawari-8","category-microwave","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30463","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=30463"}],"version-history":[{"count":17,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30463\/revisions"}],"predecessor-version":[{"id":30483,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30463\/revisions\/30483"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/30465"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=30463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=30463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=30463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}