![\"Suomi](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2018\/01\/180101_0710utc_suomi_npp_viirs_DayNightBand_InfraredWindow_Chesapeake_Bay_streamer_anim.gif\")
<\/a>Suomi NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images at 0710 UTC, with plots of 07 UTC surface reports [click to enlarge]<\/p><\/div>Suomi NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images (above)<\/strong> <\/em>showed a well-defined Chesapeake Bay “streamer” cloud\u00a0 at 0710 UTC or 3:10 AM local time on 01 January 2018<\/strong><\/a>. This cloud feature resulted from the flow of unusually-cold air over the relatively warm water of the bay — a process identical to that which produces the more common “lake effect” cloud bands. With the benefit of ample illumination from a Full Moon, the “visible image at night” capability of the Day\/Night Band was vividly illustrated (and a VIIRS instrument on the JPSS<\/strong><\/a> series of satellites — including the recently-launched NOAA-20 — will provide similar imagery).<\/p>\n During the subsequent daylight hours, 1-minute Mesoscale Sector<\/strong><\/a> GOES-16 (GOES-East)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>) images (below)<\/strong><\/em> showed the Chesapeake Bay streamer cloud moving southward. Note that this cloud produced light snow as far south as Currituck, North Carolina (KOTX) from 14-15 UTC or 10-11 AM local time. It is possible that some light snow also occurred across a portion of the Eastern Shore of Virginia and the Outer Banks of North Carolina, but verification is not possible due to the scarcity of surface observation sites in those areas.<\/p>\n