Why can't you cancel Emergency Warnings like you used to?

I am in Houston and we have gotten tons of flooding, but these messages are getting absurd. It drops me out of watching recorded shows and I have to watch these messages for a few minutes till they are gone. I know it is freaking flooding! You used to be able to cancel these and drop it out. What gives? I have seen about 20 messages today as I stayed home because it is flooding.