And how many volcano eruptions has he predicted which didn't happen?
As I understand it, Wafula is dedicated to that particular volcano. It is said that for 2 years he'd been suspecting that the volcano was going to erupt. Quicker actions were said to not have been taken due to constant reports, perhaps over that 2 year period, that predicted an imminent eruption. Wafula only had two seismographs and while he has studied seismology, he is said to lack sufficiently sensitive equipment which would have lent additional credence to his vocalizations regarding danger. Seeing as he generally lacked adequate equipment and had been going on for 2 years, coupled with the fact that the volcano has a history of lava flows, it is not terribly surprising that he was looked upon in much the same way as the boy who cried wolf. Scientists were unable to confirm the eruption was due to the dumping of expired Viagra tablets into the volcano. On another note, I saw Travolta accurately predict an earthquake in the movie Phenomenon.
"I've found that when you want to know the truth about someone that someone is probably the last person you should ask." - Gregory House