Turban Geyser

Turban Geyser is part of the Grand Group in the Upper Geyser Basin, and is located directly to the left of Grand Geyser and to the right of Vent Geyser.

Eruption Pattern
Turban's eruptions usually occur every 16 - 24 minutes, though some intervals can be as long as 30 minutes, and occur in large, wide bursts up to 30 ft. Each eruption lasts 2 - 4 minutes.

Turban is known by geyser watchers as a main indicator for Grand's eruptions. Grand's eruptions almost always occur on Turban cycle. As Grand's pool begins to overflow close to the predicted eruption time, watchers wait until the next cycle of Turban to decide whether it will erupt or they will have to wait for the next cycle (or the following). If Grand maintain's its water level after Turban has started, it is likely that Grand will erupt; if the Grand's water level drops as Turban starts, it is likely that you will have to wait at least another ~20 minutes (or perhaps 40, 60, or more).