30 May 1998 -- South Dakota Tornado Outbreak
This 2-image Java applet will take a minute or two to load...
Hold any mouse button down as you move the cursor across the large GOES-8 3.9 micron shortwave IR image; the smaller inset window shows the corresponding GOES-8 visible image. In the 3.9 micron IR image, wet ground appears as a swath of cooler brightness temperatures (lighter gray enhancement); the visible image shows that it is generally clear (with some isolated cumulus clouds) over much of this wet ground.