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Certainly have a storm system on the approach here. we think it's going skirt the southern tier of the search area. you see a lot of clouds pushing in. and certainly can't rule out an isolated thunderstorm in the region, but visibility going to be reduced. that's the main concern. i don't see much in the way of wind impact in the area. that's the areas where we had the search initially, a couple of weeks ago. so conditions in that regard really not as bad as we've seen them. want to talk about the search area,s in very close approximpr to an area known as the wallaby plateau. we know ping dete...

They found that plane using a similar vehicle to the bluefin-21 underwater drone that mapped the debris field. remotely operated vehicles, rovs, were then used it recover the air france wreckage. has any of the technology changed since then? >> it's pretty much the same stuff. a few upgrades. few electronic upgrades here and there. it's pretty much the same equipment. >> reporter: the sheer depth of the area now being searched is a huge challenge. the titanic was about 12,000 feet down and took searchers about seven decades to find it. the signals de s detected in th search area are 14,700 fee...

About compared to the indian ocean. 260,000 square kilometers, roughly the size of romania is the the search zone. so when you go in for a closer perspective, the areas we're talking about beneath the sea's surface, this is what we're looking at. depths as low as about 20,000 feet. ping detection, 14,700 feet. getting down towards, really, the lowest points of this portion of the indian ocean. so we know the officials there saying this is doable, it certainly is possible to find this. they have the technology to do so. but it is a very challenging setup based on what we know and what we don't ...

Surface and show you the we have. some of the areas on the shallow end, then we drop down to 20,000 feet, the ping detection coming in at 14,700. you can see how we have a plateau that goes up to about 4900 feet. so a lot of terrain to work with. the ping detext being on the deeper end of it. but as the sufficients and authority there and experts saying it is workable, definitely challenging. the pressure down this low is absolutely crushing. 11,000 psi. so it's incredible. a normal submarine would be absolutely crushed instantly. but of course, we're talking about equipment that can handle th...

This could be coming from the missing airliner, it comes in the final moment when they thought they would still have a chance because the batteries expected to run out now. so this is quite the development. and we want to go to our meteorologist to talk about this area of the ocean and the depth we're talking about here and the challenges. >> you know, the challenges go down to the depth we're speaking of. that's 4,500 meters or about 14,700 feet. in much of the indian ocean, this region at least, goes down as deep as 20,000 feet, getting down as low as you can get in the region. the search zo...