{"id":33156,"date":"2019-05-09T23:59:41","date_gmt":"2019-05-09T23:59:41","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=33156"},"modified":"2019-05-12T13:50:26","modified_gmt":"2019-05-12T13:50:26","slug":"record-may-snowfall-in-duluth-minnesota","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/33156","title":{"rendered":"Record May snowfall in Duluth, Minnesota"},"content":{"rendered":"<p><center><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p dir=\"ltr\" lang=\"en\">Several snowfall records have already been broken for the Duluth area. The table in the image shows a list of these records. Stay tuned as the Monthly snowfall total and daily snowfall for today (5\/9) are likely to change. <a href=\"https:\/\/twitter.com\/hashtag\/mnwx?src=hash&amp;ref_src=twsrc%5Etfw\">#mnwx<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/mnclimate?src=hash&amp;ref_src=twsrc%5Etfw\">#mnclimate<\/a> <a href=\"https:\/\/t.co\/nYbGyV6kZt\">pic.twitter.com\/nYbGyV6kZt<\/a><\/p>\n<p>\u2014 NWS Duluth (@NWSduluth) <a href=\"https:\/\/twitter.com\/NWSduluth\/status\/1126480242699382785?ref_src=twsrc%5Etfw\">May 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/center><br \/>\n<div style=\"width: 651px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_visible_glm_SD_MN_WI_snow_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"thumbnail\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/G16_VIS_MN_SNOW_08MAY2019_2019128_230627_GOES-16_0001PANEL.GIF\" alt=\"\" width=\"641\" height=\"481\" \/><\/a><p class=\"wp-caption-text\">GOES-16 &#8220;Red&#8221; Visible <em>(0.64 \u00b5m)<\/em> images, with plots of surface weather type<em> (yellow)<\/em> and GLM Groups <em>(red)<\/em> [click to play animation | <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_visible_glm_SD_MN_WI_snow_anim.mp4\"><strong>MP4<\/strong><\/a>]<\/p><\/div>GOES-16 <em>(GOES-East)<\/em> &#8220;Red&#8221; Visible (<strong><a href=\"http:\/\/cimss.ssec.wisc.edu\/goes\/OCLOFactSheetPDFs\/ABIQuickGuide_Band02.pdf\">0.64 \u00b5m<\/a><\/strong>) images<em><strong> (above)<\/strong><\/em> showed the cloudiness associated with a midlatitude cyclone (<strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_190509_surface_analyses_anim.gif\">surface analyses<\/a><\/strong>) that moved across the Upper Midwest on <a href=\"https:\/\/www.wpc.ncep.noaa.gov\/dailywxmap\/index_20190508.html\"><strong>08 May<\/strong><\/a> &#8211; <a href=\"https:\/\/www.wpc.ncep.noaa.gov\/dailywxmap\/index_20190509.html\"><strong>09 May 2019<\/strong><\/a>.\u00a0 The system produced <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190509_temperature_snowfall_snowdepth.text\">accumulating snowfall<\/a><\/strong> from extreme eastern South Dakota to central\/northeastern Minnesota, northwestern Wisconsin and Upper Michigan &#8212; storm total accumulations were as high as 10.6 inches at Duluth, Minnesota (<strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_190509_KDLH_SFCMG.GIF\">observations<\/a><\/strong>), 10.4 inches at Poplar, Wisconsin, 5.0 inches at Atlantic Mine, Michigan and 3.0 inches at Astoria, South Dakota (<strong><a href=\"https:\/\/www.nohrsc.noaa.gov\/interactive\/html\/map.html\">NOHRSC<\/a><\/strong> maps of <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190509_12utc_24hour_snowdepth_snowfall_anim.gif\"><strong>snowfall\/snowdepth<\/strong><\/a>). Note that the NW-SE oriented band of snowfall straddling the South Dakota\/Minnesota border may have been enhanced by upslope flow as northeasterly surface winds encountered <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190509_topo.png\">rising terrain<\/a><\/strong> of the <strong><a href=\"https:\/\/en.wikipedia.org\/wiki\/Coteau_des_Prairies\">Coteau des Prairies<\/a><\/strong>.<\/p>\n<p>GOES-16 Mid-level Water Vapor (<strong><a href=\"http:\/\/cimss.ssec.wisc.edu\/goes\/OCLOFactSheetPDFs\/ABIQuickGuide_Band09.pdf\">6.9 \u00b5m<\/a><\/strong>) images <em><strong>(below)<\/strong><\/em> showed the formation of a SW-NE oriented deformation zone across Minnesota &#8212; forcing for ascent was further aided by a stretched lobe of <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_190509_500hPa_vort_anim.gif\">500 hPa vorticity<\/a><\/strong> and <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_190509_310K_PV_anim.gif\">310 K potential vorticity<\/a><\/strong> that moved northeastward across the region during this period, along with a favorably-coupled <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190509_00utc_mslp_250hPa_jet.png\">250 hPa jet streak<\/a><\/strong> configuration. Cloud features within the deformation zone across eastern South Dakota into southern\/central Minnesota had an appearance resembling convective elements\/bands in both the Visible and Water Vapor imagery.<\/p>\n<p><div style=\"width: 650px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_waterVapor_glm_SD_MN_WI_snow_anim.giff\"><img loading=\"lazy\" decoding=\"async\" class=\"thumbnail\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/G16_WV_MN_SNOW_08MAY2019_2019128_230627_GOES-16_0001PANEL.GIF\" alt=\"\" width=\"640\" height=\"480\" \/><\/a><p class=\"wp-caption-text\">GOES-16 Mid-level Water Vapor <em>(6.9 \u00b5m)<\/em> images, with plots of surface weather type <em>(yellow)<\/em> and GLM Groups <em>(red)<\/em> [click to play animation | <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_waterVapor_glm_SD_MN_WI_snow_anim.mp4\"><strong>MP4<\/strong><\/a>]<\/p><\/div>Although lightning was not widespread &#8212; and thunder was not explicitly reported in any first-order station observations &#8212; there were isolated small clusters of GOES-16 <a href=\"https:\/\/www.goes-r.gov\/spacesegment\/glm.html\"><strong>GLM<\/strong><\/a> Groups detected, first over northeastern, then central and finally over southwestern Minnesota between 2256 and 0036 UTC<em><strong> (below)<\/strong>,<\/em> indicating the presence of <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_kdlh_thundersnow.text\">thundersnow<\/a><\/strong>.<\/p>\n<p><div style=\"width: 648px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_visible_glmGroups_MN_thundersnow_anim.gif\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_visible_glmGroups_MN_thundersnow_anim.gif\" alt=\"\" width=\"638\" height=\"479\" \/><\/a><p class=\"wp-caption-text\">GOES-16 &#8220;Red&#8221; Visible <em>(0.64 \u00b5m)<\/em> images, with plots of surface weather type <em>(yellow)<\/em> and GLM Groups <em>(red)<\/em> [click to enlarge]<\/p><\/div><div style=\"width: 649px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_waterVapor_glmGroups_MN_thundersnow_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190508_goes16_waterVapor_glmGroups_MN_thundersnow_anim.gif\" alt=\"\" width=\"639\" height=\"480\" \/><\/a><p class=\"wp-caption-text\">GOES-16 Mid-level Water Vapor <em>(6.9 \u00b5m)<\/em> images, with plots of surface weather type <em>(yellow)<\/em> and GLM Groups <em>(red)<\/em> [click to enlarge]<\/p><\/div><br \/>\n<center><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">We have received multiple reports of thundersnow in the Duluth and Cloquet areas. We have seen and heard it here at the office as well! <a href=\"https:\/\/twitter.com\/hashtag\/mnwx?src=hash&amp;ref_src=twsrc%5Etfw\">#mnwx<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/wiwx?src=hash&amp;ref_src=twsrc%5Etfw\">#wiwx<\/a><\/p>\n<p>&mdash; NWS Duluth (@NWSduluth) <a href=\"https:\/\/twitter.com\/NWSduluth\/status\/1126262184189857792?ref_src=twsrc%5Etfw\">May 8, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><br \/>\n<\/center><br \/>\nThrough occasional breaks in the clouds later in the day on 09 May, GOES-16 <strong><a href=\"http:\/\/rammb.cira.colostate.edu\/training\/visit\/quick_guides\/Day_Cloud_Phase_Distinction.pdf\">Day Cloud Phase Distinction<\/a><\/strong> Red-Green-Blue (RGB) images <em><strong>(below)<\/strong><\/em> revealed the stationary signature of fresh snow cover<em> (darker green)<\/em> across central to northeastern Minnesota and far northwestern Wisconsin (glaciating cloud tops also appear as shades of green).<\/p>\n<div style=\"width: 649px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190509_goes16_dayCloudPhaseDistinctionRGB_MN_WI_snowcover_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"thumbnail\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/mn_wi_rgb-20190509_190127.png\" alt=\"\" width=\"639\" height=\"367\" \/><\/a><p class=\"wp-caption-text\">GOES-16 Day Cloud Phase Distinction RGB images [click to play animation | <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190509_goes16_dayCloudPhaseDistinctionRGB_MN_WI_snowcover_anim.mp4\"><strong>MP4<\/strong><\/a>]<\/p><\/div>\n<p style=\"text-align: center;\"><strong>===== 10 May Update =====<\/strong><\/p>\n<p><div style=\"width: 652px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190510_goes16_visible_MN_snowcover_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"thumbnail\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/dlh_vis-20190510_133128.png\" alt=\"\" width=\"642\" height=\"381\" \/><\/a><p class=\"wp-caption-text\">GOES-16 &#8220;Red&#8221; Visible <em>(0.64 \u00b5m)<\/em> images [click to play animation | <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190510_goes16_visible_MN_snowcover_anim.mp4\"><strong>MP4<\/strong><\/a>]<\/p><\/div>GOES-16 Visible images<strong><em> (above)<\/em><\/strong> showed two swaths of snow cover remaining across northeastern Minnesota <em>(where reported snow depths were 1-2 inches)<\/em> and northwestern Wisconsin <em>(where reported snow depths were 4-5 inches)<\/em> on the morning of 10 May.<\/p>\n<p>Comparisons of GOES-16 Land Surface Temperature (LST) and Visible images at 1401 UTC and 1501 UTC <em><strong>(below)<\/strong><\/em> indicated that LST values were as much as 10\u00baF colder within the areas of snow cover <em>(brighter shades of cyan)<\/em> compared to adjacent bare ground.<\/p>\n<p><div style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190510_1401utc_goes16_landSurfaceTemperature_visible_MN_snowcover_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190510_1401utc_goes16_landSurfaceTemperature_visible_MN_snowcover_anim.gif\" width=\"640\" height=\"380\" \/><\/a><p class=\"wp-caption-text\">GOES-16 Land Surface Temperature and &#8220;Red&#8221; Visible <em>(0.64 \u00b5m)<\/em> images at 1401 UTC [click to enlarge]<\/p><\/div><div style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190510_1501utc_goes16_landSurfaceTemperature_visible_MN_snowcover_anim.gif\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/05\/190510_1501utc_goes16_landSurfaceTemperature_visible_MN_snowcover_anim.gif\" alt=\"\" width=\"640\" height=\"379\" \/><\/a><p class=\"wp-caption-text\">GOES-16 Land Surface Temperature and &#8220;Red&#8221; Visible <em>(0.64 \u00b5m)<\/em> images at 1501 UTC [click to enlarge]<\/p><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Several snowfall records have already been broken for the Duluth area. The table in the image shows a list of these records. Stay tuned as the Monthly snowfall total and daily snowfall for today (5\/9) are likely to change. #mnwx #mnclimate pic.twitter.com\/nYbGyV6kZt \u2014 NWS Duluth (@NWSduluth) May 9, 2019 GOES-16 (GOES-East) &#8220;Red&#8221; Visible (0.64 \u00b5m) [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":33161,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[76,74,30,45,5],"tags":[],"class_list":["post-33156","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glm","category-goes-16","category-lightning","category-redgreenblue-rgb-images","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/33156","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=33156"}],"version-history":[{"count":36,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/33156\/revisions"}],"predecessor-version":[{"id":33194,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/33156\/revisions\/33194"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/33161"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=33156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=33156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=33156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}