A NOAA-16 AVHRR 11.0 µm IR image (above) showed cold brightness temperatures of -10º to -20º C (violet colors) across much of northwestern Alaska on 30 September 2008. The coldest IR brightness temperatures of around -27º C or -17º F (darker blue colors) corresponded to the higher elevations of the... Read More

A cold frontal boundary was moving southward across the Pacific Ocean and approaching the Hawaiian Islands on 29 September – 30 September 2008, as seen on a comparison of AWIPS visible, IR, and water... Read More