Scientists at the Pacific Tsunami Warning Center are used to monitoring seismic activity and water level data everyday, but now there's a heightened sense of urgency. Geophysicist Victor Sardina says there is more risk of a big earthquake because of all the volcanic activity on Hawaii Island. On Friday there were 700 earthquakes, but he says the magnitude 6.9 quake that shook the island may have been the "big one." He says that quake could have released the tension in the earth and we can expect less activity - or that may have just been a fore shock. It's impossible to predict. 

"Kilauea is erupting along the rift zone," said Sardina. "That kind of elevates the risk of a major eruption that may also potentially generate a tsunami. We don't have any certainty about that. That doesn't mean that it's going to happen but what the public needs to know is what to do if we issue a tsunami warning".

And what the public should do if they issue a tsunami warning is leave the evacuation zones close to shore, and get on higher land. The Hawaii Emergency Management website has those maps. He recommends familiarizing yourselves with those right away, and have a plan. He says a large tsunami could hit the rift zone area within a few minutes, and envelope the rest of the islands within 30 minutes. 

If a tsunami warning does go out, you could get stuck in a traffic jam full of other people trying to escape.  Sardina says if that happens, get on the third floor of any building.