Originally Posted by
Anglo Large Clawed Otter
Heck, just a weather forecast predicting
any snow might be enough to shut down IAH for 24 hours. Panic and bedlam in the streets as the confused residents of the city flee white death from the sky

Good point

It CAN snow there, but it's rare and IAH/HOU can't handle anything more than a light coat.
Anything like what DEN as quoted above saw is not any sort of normal snow occurance.
The lack of visiblity is often the bigger problem when snow is falling.