Hi Chris. It wasn’t me who said anything about a M7.0 causing a tsunami. It was Gene A. Ichinose, a geophysics graduate student at Nevada-Reno. Note that he says “the bottom could open like a trapdoor” not that it would open like a trapdoor. “Could” is not quite the same as saying that it would or will. Only that it might. Take Care…Don in creepy town

“University of Nevada, Reno geologists have been modeling different quake scenarios for Lake Tahoe. According to their calculations, if a magnitude 7 quake struck either of two major faults under the lake, the bottom could open like a trapdoor, with a chunk of it suddenly dropping as much as 4 m. Just behind it would fall a huge, sinking slosh of water—generating a giant wave that would reach the surface, gather strength, and come barreling to shore as a tsunami.”