(Image source: The CIMSS/SSEC MODIS Today Page)Lake effect clouds and snows are a common wintertime occurrence downwind of the warm waters of the Great Lakes, and such weather events have been discussed frequently on this blog (See here, here, and here, for example) and elsewhere. When cold air moves over a warm water surface,... Read More
Cold air in the wake of a strong cold frontal boundary and dynamics associated with an intense shortwave trough aloft contributed to an outbreak of lake-effect snow and very strong winds over the Upper Peninsula (UP) of Michigan on 27 November 2007. AWIPS images of the GOES-12 6.5 µm “water vapor” channel... Read More
A comparison of the MODIS “true color” RGB image (Red=channel 01, Green=channel 04, Blue=channel 03) and the corresponding “false color” RGB image (Red=channel 02, Green=channel 07, Blue=channel 07) from 19 November 2007 (above) shows snow cover over parts of New York, Vermont, New Hampshire, and Maine (extending northward into portions of southern... Read More
The color-enhanced Channel 4 GOES-12 IR image above shows a crescent-shaped region of cooler cloud tops over the upper midwestern part of the United States, stretching from extreme northeastern Kansas northeastward to eastern Lake Superior. (The blue enhancement shows cloud-top brightness temperatures around 250 K whereas the isolated pixels of... Read More
