GOES-13 suffered an anomaly overnight: the satellite is no longer pointed towards the Earth for as yet unknown reasons. The anomaly started at 03:40 UTC on 22 May, and at 04:29 UTC, GOES-15 (GOES-West) began a 30-minute full disk scan schedule.Successive images from just before the anomaly (above), at nominal... Read More

Pavlof Volcano (located at about 55.5 N, 162 W) in the Aleutian Islands had been experiencing a series of small eruptions that were captured by the constellation of polar-orbiting satellites that pass over the region. For example, a MODIS 11.0 µm IR Window channel... Read More

Strong convection in the late afternoon/early evening produced wind damage and heat bursts over southern Wisconsin late in the day on May 14, 2013 in a region where severe convection was not considered likely. GOES Sounder data did an excellent job of depicting the instability that developed in the late afternoon. The animation above shows... Read More

McIDAS images of GOES-13 0.63 µm visible channel and 3.9 µm shortwave IR channel data (above; click image to play animation) showed the large smoke plumes and fire “hot spots” (dark black pixels on the shortwave IR imagery) associated with the Germann Road Fire in northwestern Wisconsin and the Green Valley Fire... Read More