Unseasonably cool air over the Midwest combined with warm late-Summer lake surface temperatures to sustain a line of lake-effect showers that came ashore over southern Lake Michigan on Sunday Morning. A very sharp-edged narrow cloud feature extended north-northeastward from southern Lake Michigan towards northwestern lower Michigan. Lake surface temperatures temperatures... Read More
The 10 February 2009 tornado outbreak was noteworthy for the production of strong supercells in and around metropolitan Oklahoma City at a time of year when climatology argues against their presence. This tornado outbreak has been discussed previously on this blog, which includes visible and infrared satellite animations as well as TPW, LI and ozone products from the GOES sounder. The present blog entry discusses a... Read More
GOES-11 6.7 µm and GOES-13 6.5 µm “water vapor channel” images (above) showed the formation of mountain wave clouds over parts of southern Alberta and western Montana on 03 November 2008. Note how the mountain wave clouds — which formed immediately downwind... Read More
A suspicious area of “haziness” began to appear over the Pacific Northwest region (specifically, Washington state and adjacent parts of northern Oregon and southern British Columbia) on the late afternoon and early evening GOES-12 visible images (above) on 06 July 2008. A MODIS true color image from the SSEC MODIS Today site (below) also... Read More
