{"id":9794,"date":"2012-02-24T22:39:13","date_gmt":"2012-02-24T22:39:13","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=9794"},"modified":"2012-02-24T22:39:13","modified_gmt":"2012-02-24T22:39:13","slug":"severe-thunderstorms-on-east-coast-of-united-states","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/9794","title":{"rendered":"Severe Thunderstorms on East Coast of United States"},"content":{"rendered":"<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/wmsScreenShot_24Feb20z.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"Web Map Service mapping of radar returns, watches\/warnings, and satellite-detected cloud features\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/wmsScreenShot_24Feb20z.jpg\" alt=\"Web Map Service mapping of radar returns, watches\/warnings, and satellite-detected cloud features\" width=\"480\" height=\"386\" \/><\/a><p class=\"wp-caption-text\">Web Map Service mapping of radar returns, watches\/warnings, and satellite-detected cloud features<\/p><\/div>\n<p>Unseasonably strong thunderstorms in the Piedmont on the East Coast produced a variety of severe weather on February 24th.  (Storm reports are <a href=\"http:\/\/www.spc.noaa.gov\/climo\/reports\/120224_rpts.html\">here<\/a>.)  The image above was produced by the SSEC\/CIMSS web map service at 2006 UTC on 24 February and includes radar reflectivities, watches\/warnings, storm reports, and satellite-detected cloud features (black circles indicate overshooting tops;  pink circles indicate convective initiation) over the Eastern United States.  <\/p>\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/AVHRR_0.86_Auto_Overshoot_20120224_1914toggle.gif\"><img loading=\"lazy\" decoding=\"async\" title=\"0.86 micron imagery from AVHRR and auto-detection of Overshoots from GOES-13\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/AVHRR_0.86_Auto_Overshoot_20120224_1914toggle.gif\" alt=\"0.86 micron imagery from AVHRR and auto-detection of Overshoots from GOES-13\" width=\"480\" height=\"386\" \/><\/a><p class=\"wp-caption-text\">0.86 micron imagery from AVHRR and auto-detection of Overshoots from GOES-13<\/p><\/div>\n<p>GOES-13 infrared data can be used to detect overshooting tops (see <a href=\"http:\/\/cimss.ssec.wisc.edu\/snaap\/overshootingtop\/\">here<\/a>) that are well-correlated with severe weather at the surface.  The loop above shows 0.86-micron imagery from AVHRR at 1914 UTC, with satellite-detected overshooting tops designated by the green thunderstorm icon.  As seen <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/WWDISP_1915Z_24FEB2012.GIF\">here<\/a>, the tops do overlap a thunderstorm that, at 1915 UTC, was likely producing severe weather.  12-micron <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/AVHRR_VOL_IR_20120224_1914.png\">brightness temperatures<\/a> on this top were as cold as -77 C.  The automated overshooting top detection algorithm also identified the storm over central South Carolina at <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/overtop_east_20120224_1815UTC.jpg\">1815 UTC<\/a> that was producing a tornado in central South Carolina.<\/p>\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/TCDETECTED_24FEB12_2040UTC.GIF\"><img loading=\"lazy\" decoding=\"async\" title=\"GOES-13 11-micron enhanced imagery with auto-detected Thermal Couplet (Enhanced V) indicated by white arrow\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/TCDETECTED_24FEB12_2040UTC.GIF\" alt=\"GOES-13 11-micron enhanced imagery with auto-detected Thermal Couplet (Enhanced V) indicated by white arrow\" width=\"480\" height=\"386\" \/><\/a><p class=\"wp-caption-text\">GOES-13 11-micron enhanced imagery with auto-detected Thermal Couplet (Enhanced V) indicated by white arrow<\/p><\/div>\n<p>More than an hour later, at 2040 UTC, automated satellite detection suggested the presence of a thermal couplet &#8212; that is, a warm trench downwind of an overshoot &#8212; as shown above.  This storm was part of a complex of <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2012\/02\/WWDISP_2040UTC_24FEB2012.GIF\">warned severe storms<\/a> over eastern Georgia.  This storm continued to display tornadic features as it moved northeastward into coastal eastern South Carolina.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Unseasonably strong thunderstorms in the Piedmont on the East Coast produced a variety of severe weather on February 24th. (Storm reports are here.) The image above was produced by the SSEC\/CIMSS web map service at 2006 UTC on 24 February and includes radar reflectivities, watches\/warnings, storm reports, and satellite-detected cloud features (black circles indicate overshooting [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22,10,11,3],"tags":[],"class_list":["post-9794","post","type-post","status-publish","format-standard","hentry","category-avhrr","category-general-interpretation","category-goes-13","category-severe-convection"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/9794","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=9794"}],"version-history":[{"count":12,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/9794\/revisions"}],"predecessor-version":[{"id":9806,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/9794\/revisions\/9806"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=9794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=9794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=9794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}