More weirdness at Yellowstone: Might be nothing, but is in that Norris area where the Buffalo roamed. Seems this thing is way active, for some reason.
Temperature Logs for Steamboat Geyser
Steamboat, located in Norris Geyser Basin, is one of Yellowstone's most famous geysers. Eruptions occur sporadically, but are well worth the wait. Columns of hot water reach heights up to 100 meters. This is followed by a raucus steam phase that can last for over a day, loudly discharging steam nearly 200 meters into the atmosphere.
Steamboat has proven more active during the early 21st Century than any time since the early 1980s. Between late 1991 and 2000, there were no eruptions. However, since May 2000, Steamboat has erupted 6 times... most recently on October 22, 2003
http://volcanoes.usgs.gov/yvo/steamboat.html