Predictions are shown in Mountain Time.
Eruptions cannot be predicted with absolute certainty and estimates are derived from user reports.
Eruptions cannot be predicted with absolute certainty and estimates are derived from user reports.
| Geyser | Prediction |
|---|---|
| Castle |  21:03 ± 1 hour |
| Castle |  22:15 ± 45 minutes |
| Great Fountain | 22:02 ± 2 hours |
| Riverside | 22:27 ± 25 minutes |
| Riverside | 22:30 ± 35 minutes |
| Grand | Jun 15 @ 01:30 ± 75 minutes |
| Grand | Jun 15 @ 02:22 ± 105 minutes |
| Daisy | 22:46 ± 15 minutes |
Predictions courtesy of:
GeyserTimes National Park Service (*) Prediction derived from double interval