{"id":12529,"date":"2013-03-26T23:59:15","date_gmt":"2013-03-26T23:59:15","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=12529"},"modified":"2013-03-27T20:44:16","modified_gmt":"2013-03-27T20:44:16","slug":"mesovortex-formation-in-northwestern-wisconsin","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/12529","title":{"rendered":"Mesovortex formation in northwestern Wisconsin"},"content":{"rendered":"
\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel images (click image to play animation)<\/p><\/div>\n

AWIPS images of GOES-13 0.63 \u00c2\u00b5m visible channel data (above; click image to play animation)<\/em><\/strong> revealed the formation of a mesoscale vortex over far northwestern Wisconsin during the day on 26 March 2013<\/strong><\/a>. Overlays of MADIS 1-hour interval atmospheric motion vectors (below)<\/em><\/strong> showed that the satellite-derived winds were indicating some degree of cyclonic flow into the western portion of the mesovortex.<\/p>\n

\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel images with MADIS 1-hour interval atmospheric motion vectors<\/p><\/div>\n

A comparison of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and 11.45 \u00c2\u00b5m IR channel images (below)<\/em><\/strong> showed that the cloud elements comprising the mesoscale vortex appeared convective in nature, with many exhibiting IR cloud top brightness temperatures of -20\u00c2\u00ba C or colder (light blue color enhancement)<\/em>. The morning rawinsonde data from Minneapolis, Minnesota<\/a><\/strong> indicated that a very unstable layer was present just above the surface between 950 and 750 hPa — so with a convective temperature of only 36\u00c2\u00ba F the convective elements were quick to develop once surface temperatures began to warm after sunrise.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and 11.45 \u00c2\u00b5m IR channel images<\/p><\/div>\n

===== 27 April Update =====<\/strong><\/p>\n

During the following overnight hours, the cyclonic swirl signature of the mesoscale vortex could still be seen over northwestern Wisconsin at 07:53 UTC or 2:53 AM local time on the Suomi NPP VIIRS IR brightness temperature difference “fog\/stratus product” (below)<\/strong><\/em>. Due to ample illumination by a full Moon,\u00c2\u00a0 a “night-time visible image” provided by the corresponding 0.7 \u00c2\u00b5m Day\/Night Band (DNB) showed that city lights could still be seen through the low cloud deck; other features of interest on the DNB image included ice in Green Bay and a few areas along the south shore of Lake Superior, and the southern extent of the snow cover from far eastern South Dakota into southern Minnesota.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS IR brightness temperature difference “fog\/stratus product” + 0.7 \u00c2\u00b5m Day\/Night Band image<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

AWIPS images of GOES-13 0.63 \u00c2\u00b5m visible channel data (above; click image to play animation) revealed the formation of a mesoscale vortex over far northwestern Wisconsin during the day on 26 March 2013. Overlays of MADIS 1-hour interval atmospheric motion vectors (below) showed that the satellite-derived winds were indicating some degree of cyclonic flow into […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10,11,25,49,48],"tags":[],"class_list":["post-12529","post","type-post","status-publish","format-standard","hentry","category-general-interpretation","category-goes-13","category-satellite-winds","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/12529","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=12529"}],"version-history":[{"count":6,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/12529\/revisions"}],"predecessor-version":[{"id":12535,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/12529\/revisions\/12535"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=12529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=12529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=12529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}