Water vapor imagery from the GOES-11, GOES-12, and GOES-13 satellites (above) showed the spin-up of a well-defined “stratospheric intrusion vortex” over western Kansas on 14 March 2009. The imagery from each of those 3 satellites is displayed in its native projection, which... Read More

Strong northwesterly winds (gusting as high as 70 mph at Grand Marais in the Upper Peninsula of Michigan, and 57 mph at Washington Island in northeastern Wisconsin) caused a large portion of the land-fast ice in the far northern portion of Green Bay to break away and begin drifting eastward... Read More

Strong winds over much of the southwestern US (surface winds gusted to 75 mph at Sierra Rotors Site 7 in California) were responsible for producing large areas of mountain waves across a good deal of that particular region on Read More

Several times a year the Earth’s Moon is captured on geostationary satellite imagery — but the geometry has to be exactly right in order for the Moon to be seen. A comparison of GOES-13 images (above) shows the Moon at two different times on Read More