The above animation is from the October 24, 2000,
Severe Weather Event. It produced tornadic thunderstorms and
flash flooding across the central Permian Basin. The sequence
of images were taken approximately 5 minutes apart, from 6:00
PM CDT to 10:04 PM CDT.
The many hook shaped echoes that occurred frequently
with this event; prompted the issuance of numerous severe thunderstorm
and tornado warnings that evening. This severe weather event
affected the most populated regions of the Permian Basin; the
cities of Odessa and Midland. Very heavy rains from those thunderstorms
produced flash flooding too.
weather.gov 
