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Category: VIIRS

River valley fog in southwestern Wisconsin

A comparison of AWIPS images of Suomi NPP VIIRS IR brightness temperature difference (BTD) “Fog/stratus product” and 0.7 um Day/Night Band images (above) revealed the formation of nocturnal river valley fog across parts of southwestern Wisconsin and the adjacent Upper Mississippi River Valley region at 08:00 UTC or 3:00 AM... Read More

Rim Fire in California

A night-time (10:01 UTC or 3:01 AM local time) comparison of AWIPS images of Suomi NPP VIIRS 3.74 µm shortwave IR and 0.7 µm Day/Night Band data (above) showed signatures of the Rim Fire which had been burning since 17 August near Yosemite National Park in California. On the shortwave... Read More