{"id":43580,"date":"2021-12-01T22:01:00","date_gmt":"2021-12-01T22:01:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=43580"},"modified":"2021-12-03T02:37:00","modified_gmt":"2021-12-03T02:37:00","slug":"typhoon-nyatoh-in-the-west-pacific-ocean","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/43580","title":{"rendered":"Typhoon Nyatoh in the Philippine Sea"},"content":{"rendered":"
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NOAA-20 True Color RGB and Infrared Window (11.45 \u00b5m) images [click to enlarge]<\/p><\/div>\n

NOAA-20 True Color RGB and Infrared Window (11.45 \u00b5m) images viewed using RealEarth<\/strong><\/a> (above)<\/strong><\/em> showed a large convective burst south of the center of Tropical Storm Nahtoh — located in the Philippine Sea<\/strong><\/a> — at 0356 UTC on 01 December 2021. A robust overshooting top near the center of the convective burst exhibited a cluster of cloud-top infrared brightness temperatures of -100\u00baC and colder (red pixels embedded within purple-to-yellow-to-black enhancement)<\/em>.<\/p>\n

2.5-minute rapid scan\u00a0JMA<\/strong><\/a>\u00a0Himawari-8 Infrared Window (10.4 \u00b5m) images\u00a0(below)<\/strong><\/em> displayed the evolution of Nyatoh as it transitioned from a Tropical Storm to a Category 1 Typhoon at 1200 UTC. The coldest cloud-top infrared brightness temperatures of convective overshooting tops were in the -90 to -98\u00baC range, but did not quite reach the -100\u00baC threshold that was seen in the VIIRS imagery.<\/p>\n

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JMA Himawari-8 Infrared Window (10.4 \u00b5m) images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>\n

Himawari-8 Infrared images with contours of 18 UTC deep-layer wind shear<\/strong><\/a> from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em> showed that Nyatoh was moving through an environment of low to moderate shear.<\/p>\n

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Himawari-8 Infrared images, with contours of 18 UTC deep-layer wind shear [click to enlarge]<\/p><\/div>\n

Himawari-8 Infrared – Water Vapor Difference images (below)<\/strong><\/em> indicated that much of the deep convection associated with Typhoon Nyatoh was likely penetrating the local tropopause. This product is discussed here<\/strong><\/a>.<\/p>\n

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Himawari-8 Infrared – Water Vapor Difference images [click to enlarge]<\/p><\/div>\n

DMSP SSMIS Microwave (85 GHz) images at 1905 UTC and 2148 UTC are shown below. A completely closed eyewall had not yet formed at those times.<\/p>\n

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DMSP-18 SSMIS Microwave (85 GHz) image at 1905 UTC [click to enlarge]<\/p><\/div>\n

\u00a0<\/p>\n

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DMSP-17 SSMIS Microwave (85 GHz) image at 2148 UTC [click to enlarge]<\/p><\/div>\n

===== 02 December Update =====<\/strong><\/p>\n

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JMA Himawari-8 Infrared Window (10.4 \u00b5m) images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>\n

Typhoon Nyatoh rapidly intensified to a Category 3 storm by 1200 UTC, and then Category 4 by 1800 on 02 December (ADT<\/strong><\/a> | SATCON<\/strong><\/a>) — 2.5-minute rapid scan Himawari-8 Infrared images (above)<\/strong><\/em> showed the storm during this intensification period. During the 1200-1800 UTC time frame, subtle waves could be seen propagating south-southwestward across the cold central dense overcast, away from the center of Nyatoh. Energy from those waves was apparently propagating vertically, such that mesospheric airglow waves (reference<\/strong>) were evident in a Suomi-NPP VIIRS Day\/Night Band (0.7 \u00b5m) image around 1650 UTC (below)<\/strong><\/em>. Other examples of mesospheric airglow waves — caused by tropical cyclones, deep convection or jet streams — are available here<\/strong><\/a> .<\/p>\n

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Suomi-NPP VIIRS Day\/Night Band (0.7 \u00b5m) image at 1650 UTC [click to enlarge]<\/p><\/div>\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

NOAA-20 True Color RGB and Infrared Window (11.45 \u00b5m) images viewed using RealEarth (above) showed a large convective burst south of the center of Tropical Storm Nahtoh — located in the Philippine Sea — at 0356 UTC on 01 December 2021. A robust overshooting top near the center of the convective burst exhibited a cluster […]<\/p>\n","protected":false},"author":18,"featured_media":43592,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[62,78,53,45,49,2,48],"tags":[],"class_list":["post-43580","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-himawari-8","category-noaa-20","category-real-earth","category-redgreenblue-rgb-images","category-suomi_npp","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/43580","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=43580"}],"version-history":[{"count":16,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/43580\/revisions"}],"predecessor-version":[{"id":43621,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/43580\/revisions\/43621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/43592"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=43580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=43580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=43580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}