A long lake effect snow band became well-organized and stretched nearly the entire length of Lake Ontario on 20 January 2011. The cloud band was very evident on McIDAS images of GOES-13 0.63 µm visible channel data (above; click image to play animation). As the lake band moved onshore, it produced light... Read More

AWIPS images of GOES-13 6.5 µm ‘water vapor channel” data (above) showed a large area of dry air aloft moving southward across the state of Utah behind a shortwave trough axis on 19 January 2011. The 500 hPa wind fields from the RUC80 model indicated that winds turned more northerly and increased... Read More

The surface air temperature at Watson Lake in the southern Yukon Territory of Canada (station identifier CYQH) fell to -56º F (-49º C) at 16 UTC on 14 January 2011. About 2 hours later, a comparison of AWIPS images of 4-km resolution GOES-11 10.7 µm IR and 1-km resolution Read More

AWIPS images of 4-km resolution GOES-13 10.7 µm IR data (above; click image to play animation) showed an expansive deck of elevated stratus clouds covering much of eastern Texas and far southern Oklahoma on 13 January 2011.The Blended Total Precipitable Water (TPW) product (below) suggested that this elevated stratus cloud feature may... Read More