{"id":30702,"date":"2018-11-09T22:15:57","date_gmt":"2018-11-09T22:15:57","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=30702"},"modified":"2018-11-15T22:03:02","modified_gmt":"2018-11-15T22:03:02","slug":"lake-enhanced-snow-along-the-south-shore-of-lake-superior","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/30702","title":{"rendered":"Lake-enhanced snow along the south shore of Lake Superior"},"content":{"rendered":"

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>NWS Duluth<\/strong><\/a> requested a GOES-16 (GOES-East)<\/em> Mesoscale Domain Sector<\/strong><\/a> to monitor the potential for lake-enhanced snowfall along the south shore of Lake Superior on 09 November 2018<\/strong><\/a> — and 1-minute “Red” Visible (0.64 \u00b5m<\/strong><\/a>) images (above)<\/strong><\/em> showed the cyclonic flow around abroad area of low pressure over the Great Lakes (surface analyses<\/strong><\/a>), along with the formation of convective elements within the northeasterly flow over western Lake Superior.<\/p>\n

A closer look at GOES-16 Visible imagery (below)<\/strong><\/em> showed that as the convection moved inland over north-central Wisconsin and far western Upper Michigan, moderate snow developed at Ashland WI<\/strong><\/a> and heavy snow was reported at Ironwood MI<\/strong><\/a> beginning around 2030 UTC. GOES-16 GLM<\/strong><\/a> Flash data did not indicate any lightning associated with the lake-enhanced convection. Hourly surface wind barbs are also plotted; 10-minute wind data for Buoys ROAM4<\/strong><\/a> and DISW3<\/strong><\/a> are available here<\/strong><\/a> and here<\/strong><\/a> — northerly wind gusts at Buoy ROAM4 reached 25.2 m\/s (49 knots)<\/em> at 2257 UTC and 21.1 m\/s (41 knots)<\/em> at Buoy DISW3 at 2048 and 2202 UTC.<\/p>\n

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m)<\/em> images, with hourly surface weather type plotted in yellow and wind barbs (knots) plotted in cyan [click to play MP4 animation]<\/p><\/div>A sequence of Suomi NPP and NOAA-20 VIIRS Visible (0.64 \u00b5m) and Infrared Window (11.45 \u00b5m) images (below)<\/strong><\/em> showed a more detailed view of the convection that developed over western Lake Superior (in response to instability from cold air moving over relatively warm water — the temperature difference between cold air aloft at 850 hPa and the lake surface was on the order of 15-20\u00ba C).\u00a0 Snowfall rates were also locally enhanced by lifting when northerly\/northwesterly surface winds off the lake interacted with the topography of the Gogebic Range<\/strong><\/a> in Wisconsin and Michigan (where elevations rise to 1800 feet).<\/p>\n

\"Suomi<\/a>

Suomi NPP and NOAA-20 VIIRS Visible (0.64 \u00b5m)<\/em> and Infrared Window (11.45 \u00b5m)<\/em> images, with Topography [click to enlarge]<\/p><\/div>A comparison of Snow Depth at 12 UTC on 09 and 10 November, plus 24-hour Total Snowfall ending at 12 UTC on 10 November from NOHRSC<\/strong><\/a> (below) <\/strong><\/em>showed accumulations of 14 inches at two sites in north-central Wisconsin; other snowfall amounts<\/strong><\/a> included 8.6 inches at Bayfield WI and 14.6 inches at Ironwood MI.<\/p>\n

\"Snow<\/a>

Snow Depth at 12 UTC on 09 and 10 November, plus 24-hour Total Snowfall ending at 12 UTC on 10 November [click to enlarge]<\/p><\/div>Animations of radar reflectivity over the Upper Midwest and Wisconsin are available here<\/strong><\/a> and here<\/strong><\/a> (courtesy of Pete Pokrandt, UW-AOS<\/strong><\/a>).<\/p>\n","protected":false},"excerpt":{"rendered":"

NWS Duluth requested a GOES-16 (GOES-East) Mesoscale Domain Sector to monitor the potential for lake-enhanced snowfall along the south shore of Lake Superior on 09 November 2018 — and 1-minute “Red” Visible (0.64 \u00b5m) images (above) showed the cyclonic flow around abroad area of low pressure over the Great Lakes (surface analyses), along with the […]<\/p>\n","protected":false},"author":18,"featured_media":30708,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,78,49,48,5],"tags":[],"class_list":["post-30702","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-noaa-20","category-suomi_npp","category-viirs","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30702","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=30702"}],"version-history":[{"count":10,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30702\/revisions"}],"predecessor-version":[{"id":30713,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/30702\/revisions\/30713"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/30708"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=30702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=30702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=30702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}