Why do people think it's even possible to evacuate a city of millions?
Nate Silver
 @NateSilver538
27 Aug 2017
I didn't realize that no evacuation order had been issued for Houston: wapo.st/2wKbArY
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Replying to @khuey_
I recall pre-Katrina speculation about evacuation of New Orleans taking 72 hours. Presumably Houston would take longer?

Aug 27, 2017 · 6:52 PM UTC

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Replying to @davidbaron
Six and a half million vs less than two million in each metro area.
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Houston has a few more roads, though.
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