
About 3-8" of rain fell overnight in the Houston area.
Seven-day totals now 25-35", with 10-15" more on the way by Wednesday. pic.twitter.com/WoN46dlB8A— Eric Holthaus (@EricHolthaus) August 28, 2017
NWS: #Harvey > #Allison rainfall in #Houston metro area #txwx pic.twitter.com/pBubdYNIOm
— Stu Ostro (@StuOstro) August 27, 2017
The amount of rain linked to #Harvey has exceeded that of TS Allison (2001) in almost half of the time (2-3 versus 5 days). #HoustonFlood pic.twitter.com/3axpEs3oS9
— ABC13 Houston (@abc13houston) August 27, 2017
https://twitter.com/EricHolthaus/status/902158097237516288

Before and After
Buffalo Bayou in Houston: