29 March 1999 -- GOES-8 Sounder 6.5 Micrometer IR (Water Vapor)
Stratospheric Intrusion Over Southern Wisconsin?

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This loop of GOES-8 Sounder 6.5 micrometer InfraRed (water vapor) imagery shows the rapid eastward propagation of a shortwave across Nebraska, Iowa, and the southern Great Lakes region.

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