These things are usually triggered on the Korean Upbit exchange, starting with the HIVE/KRW (Korean Won) trading pair... someone executing some automated trading orders, and when the trading volume all over has been on the low side for a while (as it has) liquidity is relatively low so some large buy orders send the price rocketing.

Most of the time, it comes back down after a few hours (or a day or two) but the good news is that each time it happens Hive generally settles back at a higher base. So, we've been looking at $0.65-$0.70 Hive, so I'd say there's a really good chance the price will settle in around maybe $0.80-$0.85 after this blows over.

Unless there's something in the news I just don't know about.