{"id":30903,"date":"2018-11-29T23:59:45","date_gmt":"2018-11-29T23:59:45","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=30903"},"modified":"2018-12-02T02:56:19","modified_gmt":"2018-12-02T02:56:19","slug":"thunderstorms-over-argentina","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/30903","title":{"rendered":"Thunderstorms over Argentina"},"content":{"rendered":"

\"Suomi<\/a>

Suomi NPP VIIRS True Color RGB image at 1753 UTC [click to enlarge]<\/p><\/div>A Suomi NPP VIIRS True Color Red-Green-Blue (RGB) image viewed using RealEarth<\/strong><\/a> (above)<\/strong><\/em> showed numerous thunderstorms developing across the foothills of the Andes in western Argentina on 29 September 2018, in advance of a cold front<\/strong><\/a> that was moving northward.<\/p>\n

Closer views of VIIRS True Color and Infrared Window (11.45 \u00b5m) images from Suomi NPP at 1753 UTC and NOAA-20 at 1843 UTC (below)<\/strong><\/em> depicted several cold overshooting tops (darker red enhancement)<\/em> associated with the more vigorous thunderstorm updrafts.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS True Color RGB and Infrared Windoe (11.45 \u00b5m)<\/em> images at 1753 UTC [click to enlarge]<\/p><\/div>

\"NOAA-20<\/a>

NOAA-20 VIIRS True Color RGB and Infrared Windoe (11.45 \u00b5m)<\/em> images at 1843 UTC [click to enlarge]<\/p><\/div>In support of the RELAMPAGO-CACTI<\/strong><\/a> field experiment, a GOES-16 (GOES-East)<\/em> Mesoscale Domain Sector<\/strong><\/a> had been positioned over the region, providing 1-minute imagery — animations of “Red” Visible (0.64 \u00b5m<\/strong><\/a>), Near-Infrared “Snow\/Ice” (1.61 \u00b5m<\/strong><\/a>) and “Clean” Infrared Window (10.3 \u00b5m<\/strong><\/a>) imagery (below)<\/strong><\/em> showed the upscale development of the convection from 1300-2330 UTC. The largest storms were in the vicinity of and to the south of Mendoza (SAME) and Rio Cuarto (SAOC).<\/p>\n

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>

\"GOES-16<\/a>

GOES-16 Near-Infrared “Snow\/Ice” (1.61 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>

\"GOES-16<\/a>

GOES-16 “Clean” Infrared Window (10.3 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>Toward the end of the day, a closer look at one storm along the southeastern end of the large convective complex (below)<\/strong><\/em> showed that it exhibited awell-defined enhanced-V<\/strong><\/a> signature around 20 UTC and shortly thereafter produced a long-lived Above-Anvil Cirrus Plume<\/strong><\/a> (AACP). Both are signatures of storms that often produce large hail, damaging winds or tornadoes.<\/p>\n

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m, top)<\/em>, Near-Infrared :Snow\/Ice” (1.61 \u00b5m, center)<\/em> and “Clean” Infrared Window (10.3 \u00b5m, bottom)<\/em> images [click to play MP4 animation]<\/p><\/div>The AACP exhibited a colder (around -55\u00baC, shades of orange)<\/em> infrared brightness temperature than the anvil beneath it (-40 to -50\u00baC, green to yellow enhancement)<\/em>, due to the atmospheric temperature profile aloft as seen on 12 UTC rawinsonde data from nearby Santa Rosa (below)<\/strong><\/em>. The sounding profile suggests that the AACP was at or perhaps above the tropopause.<\/p>\n

\"Plot<\/a>

Plot of 12 UTC Santa Rosa rawinsonde data [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

A Suomi NPP VIIRS True Color Red-Green-Blue (RGB) image viewed using RealEarth (above) showed numerous thunderstorms developing across the foothills of the Andes in western Argentina on 29 September 2018, in advance of a cold front that was moving northward. Closer views of VIIRS True Color and Infrared Window (11.45 \u00b5m) images from Suomi NPP […]<\/p>\n","protected":false},"author":18,"featured_media":30933,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,78,53,45,3,49,48],"tags":[],"class_list":["post-30903","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-noaa-20","category-real-earth","category-redgreenblue-rgb-images","category-severe-convection","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30903","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=30903"}],"version-history":[{"count":10,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30903\/revisions"}],"predecessor-version":[{"id":30917,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30903\/revisions\/30917"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/30933"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=30903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=30903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=30903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}