{"id":127,"date":"2006-09-20T23:21:33","date_gmt":"2006-09-20T23:21:33","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/2006\/09\/20\/lake-effect-rain-bands\/"},"modified":"2006-09-21T17:07:04","modified_gmt":"2006-09-21T17:07:04","slug":"lake-effect-rain-bands","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/127","title":{"rendered":"Lake-effect rain bands"},"content":{"rendered":"<p><a title=\"MODIS true color image\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/2006-09-20_1627-1639_grla_010403_hkm.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"371\" align=\"middle\" alt=\"MODIS true color image\" id=\"image123\" title=\"MODIS true color image\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/2006-09-20_1627-1639_grla_010403_hkm.jpg\" \/><\/a><\/p>\n<p>Cold air advection in the wake of a <a target=\"_blank\" title=\"surface map\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060920_21z_surface_map.jpg\"><strong>secondary cold front<\/strong><\/a> helped to  generate some well-defined lake effect rain bands over Lake Huron on 20 September <a target=\"_blank\" title=\"GOES-12 visible image animation\" href=\"http:\/\/cimss.ssec.wisc.edu\/goes\/misc\/blog\/060920_g12_vis.mov\"><em><strong>(QuickTime animation of GOES-12 visible images)<\/strong><\/em><\/a>. The cold air mass allowed <a target=\"_blank\" title=\"minimum temperatures\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060920_minimum_temperatures.jpg\"><strong>daily minimum temperatures<\/strong><\/a> at the surface to fall into the 30s to 40s F across the Great Lakes region (getting as cold as 26 F at Hayward WI and Embarrass MN). The air temperatures aloft (850 hPa, near 5000 feet) were 0 to -3 C; as this cold air  flowed over the relatively warm waters of Lake Huron (<a target=\"_blank\" title=\"lake water temperatures\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060919_gl_sst.gif\"><strong>water temperatures of 15-18 C<\/strong><\/a>), the release of the thermal instability helped elongated cloud bands to form (generally parallel to the boundary layer wind direction. The AWIPS<strong> <\/strong><a target=\"_blank\" title=\"MODIS cloud phase product\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060920_modis_cloud_phase.jpg\"><strong>MODIS cloud phase product<\/strong><\/a> indicated that most of the lake-effect clouds were <em>water phase<\/em> clouds (blue enhancement), although it did flag portions of the longest cloud band as &#8220;mixed phase&#8221; (darker gray enhancement) where the <a target=\"_blank\" title=\"MODIS IR image\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/09\/060920_modis_ir.jpg\"><strong>cloud top temperatures<\/strong><\/a> were as cold as -12 C. With daytime surface air temperatures warming into the 50s F, the precipitation falling from these cloud bands was in the liquid form; similar cloud band features produce significant lake-effect snowfall during the colder winter months.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cold air advection in the wake of a secondary cold front helped to generate some well-defined lake effect rain bands over Lake Huron on 20 September (QuickTime animation of GOES-12 visible images). The cold air mass allowed daily minimum temperatures at the surface to fall into the 30s to 40s F across the Great Lakes [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10,8,12],"tags":[],"class_list":["post-127","post","type-post","status-publish","format-standard","hentry","category-general-interpretation","category-marine-weather","category-modis"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/127","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=127"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/127\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}