{"id":42481,"date":"2021-09-20T15:43:34","date_gmt":"2021-09-20T15:43:34","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=42481"},"modified":"2021-09-20T20:03:33","modified_gmt":"2021-09-20T20:03:33","slug":"sheared-tropical-storm-peter","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/42481","title":{"rendered":"Sheared Tropical Storm Peter"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2021\/09\/SNPP_DNBG16ABIBand13_ScreenCap0620toggle.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1250\" height=\"911\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2021\/09\/SNPP_DNBG16ABIBand13_ScreenCap0620toggle.gif\" alt=\"\" class=\"wp-image-42484\" \/><\/a><figcaption>Suomi NPP Day Night Band visible (0.7 \u00b5m) imagery and GOES-16 infrared (10.3 \u00b5m) imagery, 0620 UTC on 20 September 2021 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Suomi NPP Day Night imagery, in a toggle above with infrared imagery from GOES-16, (both displayed in <a href=\"https:\/\/realearth.ssec.wisc.edu\">RealEarth<\/a>) depicts a classic sheared Tropical Cyclone structure to the east-northeast of the Caribbean Sea.  The low-level circulation (very apparent in the nighttime visible imagery under the illumination of a near-full moon) is displaced to the west of the deep convection near the edge of this Suomi NPP scan.  Indeed, the low-level circulation is difficult to discern in the single enhanced infrared image (animation better reveals its structure however).  An earlier (0527 UTC) overpass from NOAA-20, below (VIIRS imagery courtesy William Straka, CIMSS), also shows the circulation to the west of the main convection.  It would be a challenge to locate correctly the storm center based solely on the VIIRS infrared imagery!<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2021\/09\/I05_DNB_N20_0527_092021_TSPeter_nolabels_toggle.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"1035\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2021\/09\/I05_DNB_N20_0527_092021_TSPeter_nolabels_toggle.gif\" alt=\"\" class=\"wp-image-42492\" \/><\/a><figcaption>NOAA-20 VIIRS I05 (11.5 \u00b5m) and Day Night Band Visible (0.7 \u00b5m) imagery at 0527 UTC on 20 September 2021 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p>The shear that is disrupting TS Peter&#8217;s structure is shown below (imagery from the <a href=\"http:\/\/tropic.ssec.wisc.edu\/\">SSEC Tropical website<\/a>), overlain on top of 1-km visible imagery at 1300 UTC.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2021\/09\/ShearAnalysisCIMSS_1300UTC_20Sept.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1052\" height=\"694\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2021\/09\/ShearAnalysisCIMSS_1300UTC_20Sept.gif\" alt=\"\" class=\"wp-image-42485\" \/><\/a><figcaption>GOES-16 Visible (0.64 \u00b5m) Imagery, 1300 UTC, along with an analysis of 200-850 mb wind shear (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>For more information on struggling Tropical Storm Peter, visit the website of the <a href=\"https:\/\/www.nhc.noaa.gov\">National Hurricane Center<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Suomi NPP Day Night imagery, in a toggle above with infrared imagery from GOES-16, (both displayed in RealEarth) depicts a classic sheared Tropical Cyclone structure to the east-northeast of the Caribbean Sea. The low-level circulation (very apparent in the nighttime visible imagery under the illumination of a near-full moon) is displaced to the west of [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":42485,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,53,49,2,48],"tags":[],"class_list":["post-42481","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-real-earth","category-suomi_npp","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/42481","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\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=42481"}],"version-history":[{"count":6,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/42481\/revisions"}],"predecessor-version":[{"id":42495,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/42481\/revisions\/42495"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/42485"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=42481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=42481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=42481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}