Indeed they are.

Jack I'au'kea
November 20, 2014 ·
Courteous warning to Big Island - if I can smell sulfur all the way out here in California, I know something big is gonna happen. Kapoho area - all the hot spots will be Kapoho, Pu'uoo vent if the lava flow reaches that vent it is going to blow sky high. Geothermal plant and Leilani Estates is in big danger. Just something I see coming - been way over due - 1960 was the last one that happened. 2015 might be the next one. The smell of sulfur won't go away I stay painting, I'm sitting here watching movies and the smell of sulfur just keeps surrounding me like it's telling me something. So now I'm telling you - stand fast and be careful.