| Date: | 1949-09-09 |
| Time: | 1200 A |
| Geyser: | Grand |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | ~60m |
| Standardized Duration: | ~1h 0m |
| Grand Code: | -45- |
| Time Entered: | 2024-12-28 20:58:32 |
| Time Uploaded: | 2024-12-28 20:58:32 |
| Entrant: | mhreed |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | No time reported. From the 1949 Marler annual report (also published in Yellowstone Nature Notes, Vol. 23 No. 6): "On September 9 the Grand went on a rampage, displaying one of those unusual eruptions for which it is famous. Instead of the usual twenty minutes of play, and the average eleven separate eruptions [bursts], the activity lasted for nearly an hour, during which forty-five major eruptions [bursts] were counted." |