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Loop shows 15-minute GOES-8 IR4 imagery and 15-minute CG lightning data from 23:15 to 05:00 on 28–29 July 1997.

Cloud tops as cold as –70°C and copious lightning around the Denver area indicate that the Denver sounding is not representative of these storms. Post-event analysis indicates that mid-level drying and cooling occurred. However, the Denver sounding appears to be representative of the Fort Collins area with cloud tops between –30°C and –40°C and infrequent lightning.