30 May 1998 -- South Dakota Tornado Outbreak

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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 temperatues (lighter gray enhancement); the visible image shows that it is generally clear over much of this wet ground, and the wet ground appears slightly darker than the surrounding dry ground.

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