I think you might be mixing us up with another website like wunderground.com. Since I have worked here starting in December of '05, I have not seen anything like you are describing. The only thing that I think comes close is the current weather display which has graphs for the past 24 hours http://www.mountwashington.org/weather/conditions.php. But maybe we had something prior to this that I don't know about.
Originally Posted by sledog
Staff Meteorologist/Night Observer, KMWN (Mt Washington Obs., NH)