| Date: | 2021-07-19 |
| Time: | 1628 |
| Geyser: | Grotto |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 61m |
| Standardized Duration: | 1h 1m |
| Time Entered: | 2021-07-19 16:30:36 |
| Time Updated: | 2021-08-02 09:21:41 |
| Time Uploaded: | 2021-08-02 09:21:41 |
| Entrant: | BrianR |
| Observer: | BrianR, BenVL |
| Submitted to: | GeyserTimes for iOS |
| Comments: | Grotto Central Vents: Bottom 16:26-16:27 Upper pair 16:26-16:28 Upper pair 17:21-17:27 Grotto Splashes of water: 16:01-16:03 16:25-16:28 Rocket Splashes of water: 16:03 16:27-16:28 Grotto Fountain: No visible or audible water, or pressure pool up prior to Grotto eruption Spa Pool level and vents: (See 7/17/21 Grotto comments for definitions) 15:32 —- 1.25 15:50 —- 1.25 16:08 —- 1.5 16:22 —- 2 16:28 —- 2 16:51 —- 2 17:01 —- 2 17.36 —- 3, LV on (north pool vent) 17:51 —- 2.5 18:16 —- 2.75 18:31 —- 3 18:47 —- 3.5 18:54 —- 3.5 19:02 —- 3.5, LV off 19:22 —- 4, LV on |