07 October 1999 | Eruption of the Guagua Pichincha Volcano in Ecuador
GOES-8 Visible / IR Differernce Product / 6.7 Micron IR ("Water Vapor")

Hold the left mouse button down as you drag the slider above the image (or use the arrow buttons) to fade between the GOES-8 visible image and the corresponding GOES-8 IR difference product and 6.7 micron IR ("water vapor") images at 16:15 UTC on 07 October 1999. At this time (about 4 hours after the eruption), the plume is difficult to identify on the IR difference product; the thickest portion of the easternmost ash plume is apparent on the visible image, but the entire eastern portion of the plume is well defined on the water vapor image.

Java applet developed by Tom Whittaker, CIMSS / SSEC

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