{"id":63957,"date":"2025-04-06T23:08:51","date_gmt":"2025-04-06T23:08:51","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=63957"},"modified":"2025-04-06T23:33:57","modified_gmt":"2025-04-06T23:33:57","slug":"warm-patch-of-water-in-lake-michigan","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/63957","title":{"rendered":"Warm patch of water in Lake Michigan"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/VIIRSTrueColor_LST-20250406_180126.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"743\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/VIIRSTrueColor_LST-20250406_180126-1024x743.png\" alt=\"\" class=\"wp-image-63958\" srcset=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/VIIRSTrueColor_LST-20250406_180126-1024x743.png 1024w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/VIIRSTrueColor_LST-20250406_180126-300x218.png 300w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/VIIRSTrueColor_LST-20250406_180126-768x557.png 768w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/VIIRSTrueColor_LST-20250406_180126.png 1155w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">VIIRS True Color Imagery over Lake Michigan, 1801 UTC on 6 April 2025, with Lake Surface Temperatures (degrees Fahrenheit) shown in regions of clear skies (click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Light winds and clear skies with High Pressure over the <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/sfc040625_191001.gif\">western Great Lakes<\/a> fostered the development of a warm(ish) patch of water over central Lake Michigan on 6 April 2025.  (<a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/58756\">This has happened before!<\/a>) Light winds means little vertical mixing in the surface layer of the lake, and solar insolation can heat the water.  The warmest temperature diagnosed by the ACPSO algorithm was 43<sup>o<\/sup>F, green in the enhancement used above.  <\/p>\n\n\n\n<p>GOES-16 Lake Surface Temperatures, below, show the temporal evolution of the warm eddy, with warmest temperatures between 1700 and 1900 UTC.  A mid-lake temperature sensor warms 3 degrees during the day.  In addition, lake breezes develop over coastal Wisconsin, Illinois, Indiana and Michigan, just what one might expect in a light wind regime as the land becomes warmer relative to the still-cold lakes.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1155\" height=\"838\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/G16LST-20250406_1601_to_2001step.gif\" alt=\"\" class=\"wp-image-63960\"\/><figcaption class=\"wp-element-caption\">GOES-16 temperatures over Lake Michigan, 1601 &#8211; 2001 UTC on 6 April 2025 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>A timely Metop-C overpass on 6 April produced the ASCAT wind plot shown below (<a href=\"https:\/\/manati.star.nesdis.noaa.gov\/datasets\/ASCATCData.php\">from this source<\/a>).  Very light winds were present over southern Lake Michigan.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"650\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/MetopC_ASCAT_06April2025_1621UTC.png\" alt=\"\" class=\"wp-image-63961\" srcset=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/MetopC_ASCAT_06April2025_1621UTC.png 740w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/04\/MetopC_ASCAT_06April2025_1621UTC-300x264.png 300w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><figcaption class=\"wp-element-caption\">Advanced Scatterometer (ASCAT) winds over the Great Lakes, 1449 UTC (Lakes Erie\/Ontario\/Huron) and 1629 UTC (Lakes Michigan\/Superior) on 6 April 2023 (Click to enlarge) <\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Light winds and clear skies with High Pressure over the western Great Lakes fostered the development of a warm(ish) patch of water over central Lake Michigan on 6 April 2025. (This has happened before!) Light winds means little vertical mixing in the surface layer of the lake, and solar insolation can heat the water. The [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":63958,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,58,78],"tags":[],"class_list":["post-63957","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-metop","category-noaa-20"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63957","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=63957"}],"version-history":[{"count":5,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63957\/revisions"}],"predecessor-version":[{"id":63966,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63957\/revisions\/63966"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/63958"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=63957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=63957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=63957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}