Kudos once again to David Zaff (National Weather Service Buffalo NY) for bringing another interesting feature to our attention. Dave sent an email mentioning a gravity wave that he saw on water vapor imagery propagating westward across the Gulf of Mexico on Read More

A side-by-side comparison of GOES-12 and GOES-13 visible images (above) shows a well-defined lake-effect cloud band that was oriented generally north-to-south across Lake Michigan on 04 February 2009. This narrow cloud band was producing heavy snow as it moved inland over far... Read More

GOES-13 visible channel images (above) displayed a beautiful example of ducted internal gravity wave clouds over parts of Iowa, Wisconsin, Illinois, and Michigan during the daylight hours on 27 January 2009. The main linear “wave train” feature became obscured by a veil... Read More

A comparison of GOES-12 and GOES-13 visible images (above) showed a long lake-effect cloud band that was oriented generally north-to-south across Lake Michigan on 20 January 2009. Convergence of surface winds was helping to sustain the cloud band over the lake, which... Read More