Researchers working on Sandia National Lab's Z Machine were able to create ice with a temperature higher than boiling water.
"'The three phases of water as we know themâ€”cold ice, room temperature liquid, and hot vaporâ€”are actually only a small part of waterâ€™s repertory of states,' said Sandia researcher Daniel Dolan. 'Compressing water customarily heats it. But under extreme compression, it is easier for dense water to enter its solid phase [ice] than maintain the more energetic liquid phase [water].'"
So how many states does water have? Apparently 11, although nobody is quite sure how each one behaves (hence the purpose of the research). http://www.livescience.com/forcesofnature/070315_water_ice.html