Intervals between eruptions range 35 min - 2 hours. Watch the crowd ebb and flow. She is about to blow when the crowd grows.Provided by National Park Service
The above webcam shows a static image of Old Faithful in Yellowstone National Park. The image includes the next predicted eruption time as well as a large and crisp image of Yellowstone's most popular geyser.
An Old Faithful eruption lasts 1.5 to 5 minutes and reaches a height of 90-184 feet (27-55 m). The period of time between Old Faithful’s eruptions ranges from 35 to 120 minutes, though the average is 92 minutes. About 90 percent of eruption predictions are accurate within a window of plus or minus 10 minutes.