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Observations for 2025 August 18


Did not expect to arrive in the Old Faithful area and find that Grand had not erupted since before we left home. Was pleasantly surprised to get checked in and partially unload the truck and see that a half hour later it still had not erupted, and interval approaching twelve hours. So suspended getting the cabin set up for a wait out at Grand. Didn't bring the light, as it needed to be unpacked first.

Only waited one Turban eruption interval of just over fourteen minutes. The pool filled nicely with Vent starting to overflow before the start of Turban's eruption. Then Grand took its time getting started with a series of large boops before the surging turned into jetting.

At just over 7-1/2 minutes, the burst was so short we pretty much had to get a second burst, which we did. The total eruption duration was just over nine minutes, and Grand didn't really make an effort for a third burst. Vent and Turban slowed down as if they were stopping, then resumed normal post eruption activity.

2025-Aug-18 : 18:06:43 T2C

 18:05:32	Vent Ovfl	-1m11s
 18:05:36	Turban	-1m07s
 18:06:34	Boop	-0m09s
 18:06:43	B1	--- d=07m39s
 18:08:23	Vent	1m40s
 18:14:22	P1	7m39s d=42s
 18:15:04	B2	8m21s d=45s
 18:15:49	P2	9m06s
Vent & Turban continue

				     ΣB=08m24s	ΣD=09m06s
	* * * * *
 17:51:19			d=03m23s 	
		     Turban: 14m17s

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GeyserLog 4.1


GeyserLog 4.1 is available on the iOS AppStore.

Functionality remains the same, but much of GeyserLog has been rewritten to use newer features of iOS such as SwiftUI, Swift Concurrency and better networking.

  • Logbook List replaces the old Logbook view and the Recents list. It allows for display by name or event time over a selectable period of time. Filtering by groups and features is supported. Events use color coding and icons to differentiate between eruptions, notes, webcam and SMS entries, and your own submissions, along with icons to denote comments, confirms, and attachments.
  • In the Logbook, when a note is later than the latest eruption event, both will be shown.
  • Formatting of messages for Satellite SMS (requires registering your phone number with the GeyserTimes website.)
  • The Predictions view will now include the Apple Weather for the same period of time.
  • Predictions within an event panel will use the same color bar format, along with a display of the window. The feature name will also be highlighted with the color bar value if applicable.
  • Notebook Pages allow the gathering of notes and event times that don't need to be submitted to GeyserTimes. It's still a work in progress, and the views will probably change as field testing progresses. Also, it's not guaranteed to not lose data, so use with caution and please report any failures or problems.