period of time. so, this does not portend well for the system, joe. >> and the rain, how big of a concern is that on top of you have storm surge and win are obviously the things to think about with hurricanes? but there is going to be a lot of rain coming in this system as well, right? >> this area and really areas going on up into the mississippi river valley. they've had their wettest july, one, two, three wettest july, sever. now you've got something that in the lower gulf coast could bring upwards of 20 inches. that is going to be devastating as far as flooding, river rise, things like that. as the system move north, and slows down, and it's a prodigious rainmaker, that's going to be a bigger problem as well. again, the system is rapidly intensifying more often, producing more rain more often, and with more catastrophic results, joe. >> all right, al roker. >> but al, thanks.