A catastrophic wildfire roaring through Nevada County could be more devastating than the one that destroyed more than 250 homes near Lake Tahoe this week, according to fire experts."If we have one here, it's going to be worse," said Steve Eubanks, supervisor of the Tahoe National Forest. "We have higher temperatures, lower humidity and our vegetation is three to four weeks drier."Though Eubanks and Tahoe Forest Fire Chief Jeanne Pincha-Tulley saw many homes burned to the ground, they also saw many that remained standing. These homes all had one thing in common - defensible space of at least 100 feet …