On May 9th, 1968 in Midland, Texas, almost five inches of rain accompanied by damaging hail and whipped by high winds fell from in a two hour period. Reports of flooding in both homes and business firms were common as the cloudbursts caused water to surge over curbs. City crews were dispatched to several areas to place sandbags around homes to prevent further flooding. ... Water surged over the top of automobiles on Midland Drive near its intersection with West U.S. 80, and a rescue truck drowned out attempts to rescue the occupants. Cars started to float down the street in front of Midland High. Goddard Junior High was surrounded and small boats and large trucks and buses were used to get the kids home. Wadley was truly a river. Boats were going up and down Wadley all day. Homes on the park we now know as the Duck Pond had water up to the roof.
The next day it was reported that a 46 year old Lubbock salesman was killed when his auto was washed off West U.S. 80 and into a drain running along the highway's south side.
It CAN happen in a cache. I mean FLASH!