>>509575993
You really are a moron.
>2" per hour of rain is falling
>Upslope water starts moving down hill
>meets water that also fell
>meets water that also fell
>meets water that also fell
>All while continuing to be supplied by upstream water.
It can take three hours to turn into a wall of water, but until then it looks like just heavy rain. That's why they call them flash floods retard. levees can fail and water mitigation get overwhelmed too.
t. live in TX and had 2 smaller ones on my property this year.