{"id":31471,"date":"2019-01-24T22:59:36","date_gmt":"2019-01-24T22:59:36","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=31471"},"modified":"2019-01-25T21:11:21","modified_gmt":"2019-01-25T21:11:21","slug":"blowing-snow-across-the-upper-midwest","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/31471","title":{"rendered":"Blowing snow across the Upper Midwest"},"content":{"rendered":"

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m)<\/em> and Near-Infrared “Snow\/Ice” (1.61 \u00b5m)<\/em> images [click to play MP4 animation]<\/p><\/div>1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-16 (GOES-East)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>) and Near-Infrared (1.61 \u00b5m<\/strong><\/a>) images (above)<\/strong><\/em> displayed a long plume of horizontal convective roll<\/strong><\/a> (HCR) clouds across parts of the Upper Midwest on 24 January 2019<\/strong><\/a>. These HCR cloud features formed in the presence of strong northerly\/northwesterly boundary layer winds in the wake of a cold frontal passage (surface analyses<\/strong><\/a>), and often highlight areas where significant blowing snow and ground blizzard conditions are likely occurring.<\/p>\n

Animations of GOES-16 Visible and Snow\/Ice images with plots of surface winds and weather type are shown below. ASOS<\/strong><\/a> sites report Haze (“H”) when the surface visibility — in this case, reduced by blowing snow — is less than 7 miles but greater than or equal to 4 miles. Some sites in Minnesota and Iowa reported a visibility between 0.5 and 2.0 miles at times (animation<\/strong><\/a>).<\/p>\n

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m)<\/em> images, with hourly plots of surface wind barbs and weather type [click to play MP4 animation]<\/p><\/div>

\"GOES-16<\/a>

GOES-16 Near-Infrared “Snow\/Ice” (1.61 \u00b5m)<\/em> images, with hourly plots of surface wind barbs and weather type [click to play MP4 animation]<\/p><\/div>The signature of the HCR clouds on GOES-16 Day Cloud Phase Distinction<\/strong><\/a> Red-Green-Blue (RGB) images from the AOS<\/strong><\/a> site (below)<\/strong><\/em> was one that more closely resembled ice crystal clouds (light pink hues)<\/em> than supercooled water droplet clouds (brighter shades of white)<\/em> — suggesting a high concentration of blowing snow lofted within the boundary layer by the HRC circulations. Snow cover<\/strong><\/a> appears as shades of green in the RGB images.<\/p>\n

\"GOES-16<\/a>

GOES-16 Day Cloud Phase Distinction RGB images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 \u00b5m) and Near-Infrared (1.61 \u00b5m) images (above) displayed a long plume of horizontal convective roll (HCR) clouds across parts of the Upper Midwest on 24 January 2019. These HCR cloud features formed in the presence of strong northerly\/northwesterly boundary layer winds in the wake of a […]<\/p>\n","protected":false},"author":18,"featured_media":31473,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,45,5],"tags":[],"class_list":["post-31471","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-redgreenblue-rgb-images","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31471","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=31471"}],"version-history":[{"count":4,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31471\/revisions"}],"predecessor-version":[{"id":31476,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31471\/revisions\/31476"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/31473"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=31471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=31471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=31471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}