| Date: | 1999-07-07 |
| Time: | 0957 |
| Geyser: | Guardian |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 4m |
| Standardized Duration: | 4m |
| Time Entered: | 2017-07-19 08:33:41 |
| Time Uploaded: | 2019-05-13 21:38:45 |
| Entrant: | research-mab |
| Observer: | Norris logs - geo box 5 |
| Submitted to: | |
| Comments: | 4 min to a height of 12 ft then as Guardian went into its steam phase Valentine began to build and erupted at 1005am for approx 15min to a height of 10-12 ft. |