An impressive winter storm (which featured a TROWAL airstream) brought snow, sleet, and freezing rain to much of the central US during the 30 November to 01 December 2006... Read More

A fast-moving winter storm was responsible for widespread snow, sleet, and freezing rain across much of central US on 29 November 2006; several counties in southeastern Iowa reported 1/8 to... Read More

AWIPS MODIS imagery revealed widespread condensation trails (or “contrails”) from commercial aircraft flying across the southeastern US on 29 November 2006. These contrails were best seen using the Band 26 (1.3µm) near-IR channel (above) and the Band 27 (6.7µm) water vapor... Read More

A very cold arctic air mass had been building over central Alaska and northwestern Canada during the latter half of November 2006 (surface air temperatures colder than -40 F/-40 C have been reported daily over that region since 21 November). A NOAA-15 AVHRR 10.8µm “IR window channel” image centered... Read More