![](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2023\/12\/231222_goes16_nightiimeMicrophysicsRGB_daySnowFogRGB_SK_MB_ND_stratus_over_snow_cover_anim.gif\")
<\/a>GOES-16 Nighttime Microphysics RGB and Day Snow-Fog RGB images, from 0001 UTC to 2100 UTC on 22 December [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>GOES-16 (GOES-East)<\/em> Nighttime Microphysics RGB<\/strong><\/a> and Day Snow-Fog RGB<\/strong><\/a> images (above)<\/strong><\/em> displayed the nocturnal formation — followed by the daytime dissipation — of shallow fog\/stratus across snow-covered (shades of red in Day Snow-Fog RGB imagery) parts of southeastern Saskatchewan, southwestern Manitoba and northern North Dakota on 22 December 2023<\/strong><\/a>. With surface air temperatures dropping into the teens F, several METAR sites began to report freezing fog (that occasionally restricted surface visibility to near zero). Note that the shallow fog\/stratus did not extend to the height of a few of the plateaus in the region (such as Turtle Mountain along the North Dakota\/Manitoba border, Moose Mountain Provincial Park in Saskatchewan and Riding Mountain National Park in Manitoba).<\/p>\n A toggle between the GOES-16 Nighttime Microphysics RGB image at 1301 UTC and Topography (below)<\/strong><\/em> helped to highlight the 3 aforementioned plateau features (darker shades of tan to brown).<\/p>\n GOES-16 Nighttime Microphysics RGB image at 1301 UTC + Topography [click to enlarge]<\/p><\/div>The GOES-16 Cloud Thickness<\/strong><\/a> derived product (below)<\/strong><\/em> — a component of the Fog and Low Stratus<\/strong><\/a> suite — indicated that much of the shallow fog\/stratus was generally in the 600-1200 ft thickness range.<\/p>\n<\/a>