| Date: | 2025-08-02 |
| Time: | 1417 |
| Geyser: | Old Faithful |
| Webcam: | No |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ~4m |
| Standardized Duration: | ~4m |
| Time Entered: | 2025-08-02 21:10:26 |
| Time Updated: | 2025-08-02 21:13:00 |
| Time Uploaded: | 2025-08-02 21:13:00 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Long; eruption from 1417 to 1421. |