{"id":9615,"date":"2012-01-23T12:59:29","date_gmt":"2012-01-23T12:59:29","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=9615"},"modified":"2012-01-24T20:38:41","modified_gmt":"2012-01-24T20:38:41","slug":"severe-weather-outbreak-in-the-southeastern-us","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/9615","title":{"rendered":"Severe weather outbreak across the southeastern US"},"content":{"rendered":"
\"GOES-13<\/a>

GOES-13 10.7 \u00c2\u00b5m IR channel images + severe weather reports (click image to play animation)<\/p><\/div>\n

A major outbreak of severe thunderstorms along a strong cold frontal boundary swept eastward across much of the southeastern US on 22 January<\/strong><\/a> – 23 January 2012<\/strong><\/a>, producing widespread damaging winds, large hail, and tornadoes (SPC storm reports<\/strong><\/a>). Two tornadoes produced EF-3 damage in Alabama. AWIPS images of 4-km resolution GOES-13 10.7 \u00c2\u00b5m IR channel data with overlays of severe weather reports (above; click image to play animation)<\/strong><\/em> showed the cold cloud top IR brightness temperatures of -60 to -70 C (red to black color enhancement)<\/em> associated with some of the strongest storms. For more information, see summaries from the National Weather Service forecast offices at Litttle Rock AR<\/strong><\/a>, Jackson MS<\/strong><\/a>, and Birmingham AL<\/strong><\/a>.<\/p>\n

\"POES<\/a>

POES AVHRR 12.0 \u00c2\u00b5m and MODIS 11.0 \u00c2\u00b5m IR images<\/p><\/div>\n

A sequence of 1-km resolution POES AVHRR 12.0 \u00c2\u00b5m IR and MODIS 11.0 \u00c2\u00b5m IR images (above)<\/strong><\/em> displayed greater detail in the storm top thermal structures, with a number of\u00c2\u00a0 -70 to -80 C (black to light gray color enhancement)<\/em> IR brightness temperature values seen on the higher resolution imagery.<\/p>\n

Of particular interest was what appeared to be some sort of “cloud trench” oriented from north to south across Tennessee around 08:00 UTC, which exhibited significantly warmer MODIS 11.0 \u00c2\u00b5m IR brightness temperatures and a warmer\/drier signal on the corresponding MODIS 6.7 \u00c2\u00b5m water vapor image (below)<\/strong><\/em>. This feature was also apparent on a few of the 4-km resolution GOES-13 IR images around that time. The etiology of this satellite signature is unclear at this time.<\/p>\n

\"MODIS<\/a>

MODIS 11.0 \u00c2\u00b5m IR channel and 6.7 \u00c2\u00b5m water vapor channel images<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

A major outbreak of severe thunderstorms along a strong cold frontal boundary swept eastward across much of the southeastern US on 22 January – 23 January 2012, producing widespread damaging winds, large hail, and tornadoes (SPC storm reports). Two tornadoes produced EF-3 damage in Alabama. AWIPS images of 4-km resolution GOES-13 10.7 \u00c2\u00b5m IR channel […]<\/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":[22,11,12,26,3,38],"tags":[],"class_list":["post-9615","post","type-post","status-publish","format-standard","hentry","category-avhrr","category-goes-13","category-modis","category-poes","category-severe-convection","category-what-the-heck-is-this"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/9615","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=9615"}],"version-history":[{"count":3,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/9615\/revisions"}],"predecessor-version":[{"id":9618,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/9615\/revisions\/9618"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=9615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=9615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=9615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}