Over 28 inches of rain fell just northeast of downtown Houston in a 12-hour span, far surpassing the nearly 21 inches of rain that fell over 12 hours during Harvey.
Here's how Harvey and Allison stack up at different time intervals over Houston and Harris County. pic.twitter.com/mcQ1JX5z97— Travis Herzog (@TravisABC13) June 8, 2018
Allison's rains were more localized, unlike Harvey, which dropped nearly three feet of rain across all of Harris County over a four-day span.
Tropical Storm Allison claimed 23 lives and caused $5 billion in damage. Allison is the only tropical storm to ever have its name retired.