Eruption Detail

Approximately 2000-2100 typical minor behavior as seen all day. Decent minors but not much to make you think an eruption was coming. Started to pack up to head in as activity dramatically decreased around 2045-2100. Very little to no minors during this period. Approximately 2100 there was a concerted minor where south vent put out an unusual large amount of water for a long duration, but not particularly high. 2100-2105 minor activity resumed and SB erupted with almost no warning. Ben approximated height around 310-350’ from what I recall. Little to no wind during eruption. From Larissa and Clara’s observation from just south of Emerald, height seemed to be on the shorter side compared to other low/no wind eruptions.

Entrant: Art
Time Entered:2020-10-11 05:05:07
Time Updated:2020-10-14 06:30:15
Time Uploaded:2020-10-14 06:30:15
Submitted to:GeyserTimes for iOS

Art	Time Entered:2020-10-06 06:42:19 Time Uploaded:2020-10-06 06:42:19 Submitted to:GeyserTimes for iOS
cb	Time Entered:2020-10-06 07:39:14 Time Uploaded:2020-10-06 07:39:17 Submitted to:GeyserTimes for Android
bbev	Time Entered:2020-10-06 18:06:56 Time Uploaded:2020-10-06 18:07:00 Submitted to:GeyserTimes for Android

No flags for this eruption.

	Video of start	Entrant: Art Time Entered:2020-10-06 07:48:17 Time Updated:2020-10-06 10:33:50 Time Uploaded:2020-10-06 10:33:51 Submitted to:
https://www.flickr.com/photos/jsjgeology/50425923053	Norris Museum seismogram showing Steamboat Geyser's 9:05 PM major eruption on 5 October 2020.	Entrant: Art Time Entered:2020-10-06 12:44:54 Time Uploaded:2020-10-06 12:44:54 Submitted to:
https://www.flickr.com/photos/jsjgeology/50426792032	Norris Junction seismogram showing Steamboat Geyser's 9:05 PM major eruption on 5 October 2020.	Entrant: Art Time Entered:2020-10-06 12:45:22 Time Uploaded:2020-10-06 12:45:22 Submitted to:
https://www.flickr.com/photos/jsjgeology/50426856402	Tantalus Creek discharge graph showing Steamboat Geyser's 9:05 PM major eruption on 5 October 2020.	Entrant: Art Time Entered:2020-10-06 12:45:37 Time Uploaded:2020-10-06 12:45:37 Submitted to:
https://www.instagram.com/p/CGKqbaQAUpC/?igshid=1jtbynzrfvzq9	Photo of night eruption	Entrant: Anthonymeugenio Time Entered:2020-10-11 18:36:16 Time Uploaded:2020-10-11 18:36:16 Submitted to:

Date:	2020-10-05
Time:	2105
Geyser:	Steamboat
Webcam:	No
Initial:	No
Major/Minor:	Major
Duration:	23m
Standardized Duration:	23m
Time Entered:	2020-10-05 21:53:58
Time Updated:	2020-10-06 00:08:37
Time Uploaded:	2020-10-06 17:24:49
Entrant:	Ben VL
Observer:	Art & myself, Anthony E, Shelly C, Cheyenne R, plus Larissa, Carol & Bill
Submitted to:	GeyserTimes for iOS
Comments:	Details & height later

Eruption 1266236

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