BURNETT: Tonight, a desperate situation in Hawaii getting worse. The lava flowing from that volcano which is now blocking some of the roads being used to evacuate residents. The Hawaii National Guard preparing for the possibility of air vacations. Stephanie Elam is there. She's been there watching this. And, Stephanie, I know there's a spot inside a residential area that's become active again tonight. You're seeing all of this. What are you learning?</s>STEPHANIE ELAM, CNN CORRESPONDENT: Right. Well, what we've just learned, Erin, is that there is a fissure that had slowed down in productivity of lava, that has increased its productivity now. It's at the middle of this fissure system that they're saying is producing lava and this is inside Leilani Estates, on those streets where you've seen us walking, talking to residents. They are saying now that is encroaching on some of the streets there, so they're keeping there eyes on that. On top of that, the lava has entered the ocean in three different places, crossing over highway 137. Obviously, for people who live in this remote part of the island, if issues come up with that, they could airlift people out there. But most people have been dealing with this for three weeks and have been out. But they do let residents in every day, that's just one of the concerns. And then up at the summit, they've been dealing with more ash explosions as well as earthquakes there. So, they're keeping their eyes on it, but again, this Kilauea eruption that is happening here, it is affecting a very small part of this island. This is just about four square miles, but still, for the people living here, Erin, it's just a nightmare that does not end.</s>BURNETT: Those pictures are just incredible. And we don't know where it's going to go from here. Stephanie, thank you so much live on the ground there. And thank you all for joining us. "ANDERSON" starts now.
Lava Flow Now Blocking Some Evacuation Routes.