About the Old Faithful
Geyser Predictions
All predictions are made using a formula that takes
into account the length of the previous eruption. The formula used
has proven to be accurate, plus or minus 10 minutes, 90% of the time.
Many WebCam visitors wonder
why there isn't a prediction posted first thing in the morning and
why there is an outdated predicted up in the evening?
The prediction information is
only posted during the open-hours of the Old Faithful Visitor Center.
It cannot be posted until after the ranger at the information desk
observes the first open-hours eruption of the day. The formula uses
the length of the previous eruption to predict the time of the next
eruption. Therefore, anyone interested in Old Faithful Geyser predictions
should also be interested in the open hours of the Old Faithful Visitor
Center.
If there are predictions
posted outside the hours mentioned, it is due to the overtime or good will
of the ranger staff at the Old Faithful Visitor Center.
The Old Faithful Visitor Center is open on the following schedule:
Summer Season
8 am to 7 pm, Mountain Time
Winter Season
9 am to 5 pm, Mountain Time
Spring & Fall Seasons
Closed
If the prediction time on
the WebCam photo has passed, you are looking at an outdated prediction. Please come back
when the Old Faithful Visitor Center is open for future predictions. The last prediction
of the day involves an eruption that occurs after the visitor center closes. It remains
posted until the following morning. |
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