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Texas Rain
On Wednesday, more than 10 inches of rain poured in Rockport, Texas, approaching the nearly 10 inches of rain that Elsa dumped on a few Florida communities. Rockport received more than a foot of rain in less than 48 hours.
The rain in Texas was caused by an area of low pressure over south-central Texas that was blocked off from the jet stream rather than by a tropical cyclone. When a system is cut off from the rest of the world, weather processes move very slowly.
As a result, excellent weather tends to continue for several days in a given place. Wet weather has been present for several days in this example.