Transcript for Hawaii facing new volcano fissures that opened overnight

The other breaking story. New developments in the unfolding volcano disaster in Hawaii. That's right. New fissures opening up overnight. Lava bubbling out of two new cracks in the ground. This is all playing out over growing concerns over a potential major new eruption of the kilauea volcano that could happen at any moment. Marci Gonzalez is on the big island. Reporter: Good morning. Volcanos national park is closed indefinitely. That is where the greatest danger would be. But these smaller eruptions we keep seeing are bringing their own risks and show no sign of stopping. This morning, that fountain of lava violently gushing from new cracks in the ground. People are starting to panic right now. Reporter: 17 fissures opening here on Hawaii's big island in the past week and half. Many destructively tearing through neighborhoods. This fissure opened up in a wooded area. This is nowhere near any homes. You can see how dangerous this would be. That is spewing into the air 40 feet. One of the major concerns if it grows or others open, it could block off major roadway. Potentially stranding some residents. Just like the unpredictability of the weather, the lava is edictable. We're preparing for the worst. We're preparing for massive evacuations. Reporter: 20 miles away at the summit of kilauea, geologists watching for a possible massive steam explosion that could send giant Boulders rocketing out of this cater and ash billowing 20,000 feet in the air. The ash and smaller rocks potentially raining down for miles. We all feel scared. Nobody ever seen it happen before. So it's a guessing game. It's like, are we safe?f that concern is over the air quality because these fissures, of course, are emitting toxic gases. Part of the reason the national Guard says more evacuations could be ordered for hundreds, even thousands of more residents. Adrienne and Dan? Such a tense situation there, Marci. Thank you. Those images are incredible. That combination of beauty and lethality.

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